Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be88fe2783e8d07…

MALICIOUS

PDF

247.2 KB Created: 2010-08-15 19:25:04 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: 9d747e11feef65fab7235df1669b171a SHA-1: 42650b2884381aaf39fbfb1a54d61cad47fd5519 SHA-256: 0be88fe2783e8d07ab09253cc7d4abc6f056d5137b6f3ca33c13ecfcb7c70736
152 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript that utilizes `eval()` and `unescape()` functions, indicating obfuscated code execution. The script likely attempts to exploit vulnerabilities or redirect users to malicious URLs, as evidenced by the numerous suspicious links found within the document. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of an exploit-driven attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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.
  • 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://clarkerg.com/iuytre/znkg.php?arg=Inderal+Online
    • http://actualslimeythings.com/jydtre/tamv.php?arg=free+3rd+grade+science+energy+worksheets
    • http://clarkerg.com/iuytre/znkg.php?arg=pharmacy+controlled+subtance+florida
    • http://www.haventeens.com/wordpress/kzds.php?arg=lysine+food+group
    • http://wardrobesandkitchens.com/wordpress/kxng.php?arg=2005+nissan+key+blank
    • http://thucphamchucnangnewlife.vn/kjjhgtte/fsjq.php?arg=How+to+ferment+food
    • http://mcmireport.com/myblog/wsvc.php?arg=safe+dose+pharmacy+indianapolis
    • http://partcctv.com/jhhste/zhgk.php?arg=Ancient+etruscan+food
    • http://www.haventeens.com/wordpress/kzds.php?arg=painted+turtle+hatchling+habitats
    • http://clarkerg.com/iuytre/znkg.php?arg=celebrex+onine+pharmacy
    • http://indianpharmacynoprescription.com/products/general_health/motilium/order/
    • http://clarkerg.com/iuytre/znkg.php?arg=rite+aid+pharmacy+fredonia
    • http://www.shonstromresearch.com/hdtres/xkzp.php?arg=didrex+online+pharmacy
    • http://indianpharmacynoprescription.com/products/eye_care/cyclosporineeyedrops/order/
    • http://www.haventeens.com/wordpress/kzds.php?arg=125+x+125+web+banner+blanks
    • http://www.bionet.vn/mnbgtr/xhqy.php?arg=virtual+sex+flash
    • http://menshealthonlineshop.com/products/men_s_health/sildenafilfluoxetine/
    • http://www.gsocomatt.com/wordpress/nymq.php?arg=website+for+algebra+worksheets
    • http://www.alingua.es/kkgjte/jyvt.php?arg=dog+groomer+supply
    • http://actualslimeythings.com/jydtre/tamv.php?arg=word+meanings+using+context+clues+worksheets
    • http://www.lifewerkz.com/mnbvf/wtpc.php?arg=female+orgy
    • http://www.somethingverynew.com/home/rbhg.php?arg=daily+free+porn+site
    • http://actualslimeythings.com/jydtre/tamv.php?arg=2nd+grade+human+body+worksheets
    • http://partcctv.com/jhhste/zhgk.php?arg=Food+organization+chart
    • http://easley4dps4.com/Top/xgfh.php?arg=food+healthy+store
    • http://easley4dps4.com/Top/xgfh.php?arg=blank+2007+september+calendar
    • http://www.gsocomatt.com/wordpress/nymq.php?arg=maniac+magee+free+worksheets
    • http://www.swiftwaterfarm.com/digg/ztgp.php?arg=Chocolate+food+trends
    • http://www.bionet.vn/mnbgtr/xhqy.php?arg=male+party+hardcore
    • http://mexicanexportpharmacy.org/products/men_s_health/rockit247/order/
    • http://www.getoutofthecold.net/jsgtde/hjsm.php?arg=pharmacy+pediatric+magazines
    • http://clarkerg.com/iuytre/znkg.php?arg=natural+pharmacy+and+healthy+living
    • http://actualslimeythings.com/jydtre/tamv.php?arg=tennis+lessons+painted+desert
    • http://esark.com/lkjhg/tgny.php?arg=Kudler+fine+food+finacial
    • http://www.getoutofthecold.net/jsgtde/hjsm.php?arg=Get+Toprol-XL
    • http://www.swiftwaterfarm.com/digg/ztgp.php?arg=Valine+is+in+what+food
    • http://clarkerg.com/iuytre/znkg.php?arg=pharmacy+packaging+medications+regulations+canada
    • http://mexicanexportpharmacy.org/products/men_s_health/hardonjelly/order/
    • http://www.swiftwaterfarm.com/digg/ztgp.php?arg=Safrit+italian+food
    • http://www.haventeens.com/wordpress/kzds.php?arg=physical+science+study+guides+and+worksheets
    • http://www.gsocomatt.com/wordpress/nymq.php?arg=worksheets+on+prepositional+phrases
    • http://partcctv.com/jhhste/zhgk.php?arg=Wine+and+food+fest
    • http://www.getoutofthecold.net/jsgtde/hjsm.php?arg=Buy+Cipro
    • http://indianpharmacynoprescription.com/products/men_s_health/enhance9/order/
    • http://www.lifewerkz.com/mnbvf/wtpc.php?arg=female+orgasm+position+sexual
    • http://www.gsocomatt.com/wordpress/nymq.php?arg=elementary+4th+grade+worksheets
    • http://www.swiftwaterfarm.com/digg/ztgp.php?arg=Catholic+food+products
    • http://www.bionet.vn/mnbgtr/xhqy.php?arg=new+girlfriend
    • http://mcmireport.com/myblog/wsvc.php?arg=vitamins+pharmacy+grade
    • http://mexicanexportpharmacy.org/products/cholesterol/vytorin/order/
    +49 more URL(s)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000bb23.bin
a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBB23 264072 bytes
embedded_pdf_script_0003dbc7.bin
d0120b5ce788cf744736d1104ea62620705edcfe3e1123b39bac0790a23c5adc
pdf-embedded-script PDF decompressed stream script payload at offset 0x3DBC7 253077 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long hex-escaped blob(s).