Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a0126ef678daa45…

MALICIOUS

PDF

29.7 KB Authoring application: PDFBox
MD5: af37775b07286ea29faada5e67768e0a SHA-1: 8c1275614c3ee3d88d35457b7bac76911762d39c SHA-256: 1a0126ef678daa457f2f8283efb2b1f14a6884bf189fb6b98e753299323e6d86
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple heuristics, including a critical finding for a link farm and ClamAV detection as phishing malware. The ML classifier also strongly indicated maliciousness. The document body contains numerous embedded URLs pointing to external PDF files, suggesting a lure to download further malicious content or engage in phishing. The primary attack pattern involves leveraging these links to redirect users to potentially harmful sites.

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://myconflicts.net/uploads/1/3/0/8/130874250/dd79e9487.pdf
    • http://nicotineconfesses.com/uploads/1/3/0/6/130603900/zelifezulitanus.pdf
    • http://srcwwtp.com/uploads/1/3/0/7/130740338/kesesuwomowad-zufaneta-jomega-zaseveso.pdf
    • http://purewatersystems.net/uploads/1/3/0/8/130813141/4bce6038431.pdf
    • http://eclipse-space.com/uploads/1/3/0/5/130590592/tedivepominoxi.pdf
    • http://akasharae.com/uploads/1/3/0/6/130639442/pugedaxojeki.pdf
    • http://myflicktv.com/uploads/1/3/0/3/130379067/1319745.pdf
    • http://advancedbiocomputing.net/uploads/1/3/0/2/130288762/8227643.pdf
    • http://leximmo.net/uploads/1/3/0/2/130270895/1419118.pdf
    • http://scubatribemaldives.com/uploads/1/3/0/7/130739387/58716.pdf
    • http://athletesrecycle.com/uploads/1/3/0/6/130621290/xegalov.pdf
    • http://blogwithme.club/uploads/1/3/0/4/130475909/db0b698.pdf
    • http://www.wannascience.com/uploads/1/3/0/6/130621384/juderetapexujobutis.pdf
    • http://xtremedezigns.com/uploads/1/3/0/4/130489446/mopurat.pdf
    • http://riu5kbwh.brdge.org/uploads/1/3/0/7/130739590/130739590.html#northstar+4+reading+and+writing+free+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001b8b.bin
8d10aac2b2928853657fbb3a3bc6acdf92fa432ddeb3aa54faf6ed68c279dc32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B8B 7204 bytes

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