Malicious PDF — malware analysis report

Static analysis result for SHA-256 a249983123804656…

MALICIOUS

PDF

37.8 KB Authoring application: PDFedit
MD5: 21326c65b687149d4baffa66677b6c7c SHA-1: 1b9d8dd26d61ad74ee129f85532e8e29c3b9c42a SHA-256: a249983123804656de8897a14d4aeb53e94820f1efe6b0ac3f9a840fe6b131be
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support a malicious classification. The primary function appears to be directing users to a network of linked PDF files, likely for SEO spam or to distribute further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://g2staging.com/uploads/1/3/0/3/130379447/naposi.pdf
    • http://aprollers.com/uploads/1/3/0/5/130588905/niwudegelenusivetu.pdf
    • http://shawnaallred.com/uploads/1/3/0/2/130288465/5322752.pdf
    • http://financialcleansing.com/uploads/1/3/0/4/130436313/daxagiwixe.pdf
    • http://theempoweredyou.com/uploads/1/3/0/7/130740597/7e6599fed18fd68.pdf
    • http://longdistancevoter.com/uploads/1/3/0/7/130738893/78369.pdf
    • http://veganwebdesigner.com/uploads/1/3/0/3/130379611/panezedixidoni-busaleduranibi.pdf
    • http://www.ashokchopra.com/uploads/1/3/0/6/130620640/pasememiwefariwenal.pdf
    • http://autoseeding.net/uploads/1/3/0/8/130874480/virikaxevogaru_gefomipowe_korokol_golonojiraz.pdf
    • http://xoadd.me/uploads/1/3/0/2/130271099/raluzepul_welovokirowone_felatabokuta.pdf
    • http://excelappdevelopment.com/uploads/1/3/0/4/130477135/taxomive-gokibisifazuxa-taxawodibaji-wazelefujisavuz.pdf
    • http://fitlifeuniverse.com/uploads/1/3/0/5/130550951/fejovorikubor-muxin-tuxodazixovasud-zajawapede.pdf
    • http://hausofbrews.org/uploads/1/3/0/6/130639310/risafiweka-bexomoz.pdf
    • http://scienceroom302.com/uploads/1/3/0/5/130588574/maxisaniziwoponolal.pdf
    • http://handipapers.com/uploads/1/3/0/6/130620986/386138.pdf
    • http://brewwber.com/uploads/1/3/0/7/130739188/subugup.pdf
    • http://missiontofarm.net/uploads/1/3/0/4/130477394/6910677.pdf
    • http://sandiegofinchandsoftbill.com/uploads/1/3/0/3/130313603/zimeniditakawabasid.pdf
    • http://natashadoulabirthmarks.com/uploads/1/3/0/5/130551351/pelabumefit.pdf
    • http://2recommend.online/uploads/1/3/0/4/130492127/raribi.pdf
    • http://missoulaautotinting.com/uploads/1/3/0/6/130604700/3a81ccf9e17267b.pdf
    • http://trust-trade.net/uploads/1/3/0/7/130776211/xewajunefor.pdf
    • http://host248.carmichaelnl.com/uploads/1/3/0/6/130604151/130604151.html#passive+voice+future+going+to+exercises
    • http://excelappdev

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003050.bin
2b4076945f8c70ea92747413d41e367571a56b2355756652590053e5ca33e54c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3050 8468 bytes

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