Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2885478f7843656…

MALICIOUS

PDF

37.1 KB Authoring application: GIMP
MD5: aabfe7ac28847bd38d06b89267d92136 SHA-1: 9dda036415c54b73e3f3e40985f59073b352e050 SHA-256: b2885478f7843656f7910f9d60591133d99efd159f9d20fc8d1abdd15e0c2688
158 Risk Score

Malware Insights

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

The PDF contains an embedded JavaScript stream and a large number of external PDF links, indicating a phishing or SEO manipulation scheme. The ClamAV detection and ML classifier strongly suggest malicious intent. The embedded JavaScript is likely responsible for redirecting users to these external links or performing other malicious actions. The document body's content is heavily obfuscated and does not provide clear user-facing text, but the presence of 'Ableton live lite update' might be a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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 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.
  • 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://evocskincare.com/uploads/1/3/0/4/130478374/18cbe0.pdf
    • http://nsainapparel.com/uploads/1/3/0/4/130476045/nefezowipot.pdf
    • http://alexdibranco.net/uploads/1/3/0/4/130488157/fc3650049cf.pdf
    • http://writelifecoaching.com/uploads/1/3/0/8/130814229/rasanifo_budopofijoxeko_gobavivawoloted_rewunikuka.pdf
    • http://sarahclayconservation.com/uploads/1/3/0/5/130550867/9629029.pdf
    • http://www.chibogamco.com/uploads/1/3/0/2/130289554/9793181.pdf
    • http://services.shamalstart.com/uploads/1/3/0/6/130620168/cbe734.pdf
    • http://nw9.me/uploads/1/3/0/4/130483447/lagudojev.pdf
    • http://mutus.store/uploads/1/3/0/7/130774981/zolowovuzepaxoron.pdf
    • http://mybathbuddy.com/uploads/1/3/0/4/130478868/c8c6c82a96a2.pdf
    • http://peoplehacking.net/uploads/1/3/0/5/130551890/kupodajodiner.pdf
    • http://miguelonmusicproductions.com/uploads/1/3/0/4/130435531/gozurebu_godopav_levonaw.pdf
    • http://nwweatlhbuilder.com/uploads/1/3/0/6/130640048/kimakesule.pdf
    • http://74-123-79-182.mgwnet.com/uploads/1/3/0/7/130739947/130739947.html#ableton+live+lite+update
    • http://mybathbuddy.com/uploads/1/3/0/4/1

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002acc.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACC 2652 bytes
font_01_sfnt_off000036c7.bin
2263ca83fa27ee3bec31ce2d230e3f1df46979abaf3ada40dfa05d7aaf4804ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36C7 8208 bytes

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