Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f3d05af52ece958…

MALICIOUS

PDF

39.2 KB Authoring application: Mobipocket Creator
MD5: fb1d168c62499c36202575e976d7ab53 SHA-1: decbccdb15c72cc3a326926c31e1b3d31acafe0b SHA-256: 2f3d05af52ece958c69176a031fe41b7c4ff8acfe661124fc2ee3e77f78396dc
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm, directing users to multiple external PDF documents hosted on various domains. This behavior is indicative of a phishing or malware distribution campaign. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious nature of the file, suggesting it's involved in phishing or traffic redirection. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mscbmx.com/uploads/1/3/0/7/130739544/a093637.pdf
    • http://limoservice247.com/uploads/1/3/0/2/130289411/9a823dbd.pdf
    • http://socohomephotography.com/uploads/1/3/0/2/130287278/kenokotakepadop.pdf
    • http://xemaw.sudoxod.com/uploads/2020/01/28/3047991.pdf
    • http://doubleeroofing.org/uploads/1/3/0/7/130740375/lakesodegegizebu.pdf
    • http://cfthomas.com/uploads/1/3/0/2/130287553/130287553.html#cover+letter+template+for+graduate+nurse

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001085.bin
b863da0a53a8e42294b5c086359e3a736ddee600ca461c0004505a923c1f55a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1085 8276 bytes

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