Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ba4c0c3b94233b…

MALICIOUS

PDF

38.1 KB Authoring application: Serif PagePlus
MD5: ff423758542b27bbcd277775e1263357 SHA-1: 6f5af841562648d699a135e68ecb4f4270b85636 SHA-256: 80ba4c0c3b94233b29d97ede0c6d6413d40b8dfac262145090302da68736ebe5
160 Risk Score

Malware Insights

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

The PDF contains a mass external link farm pointing to other PDF files, a common technique for SEO poisoning or distributing malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary indicators of compromise, suggesting the document's purpose is to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nimu-mm.org/uploads/1/3/0/6/130639751/1098f13.pdf
    • http://paintintothenite.com/uploads/1/3/0/7/130775174/resakesodevam.pdf
    • http://elder-pathways.com/uploads/1/3/0/3/130379062/2279926.pdf
    • http://mail.jeff-watson-critical-math-thinking.com/uploads/1/3/0/4/130492441/f9790b5cb47a5.pdf
    • http://nicolewilliamswrites.com/uploads/1/3/0/6/130639281/kopajiwurisixeb.pdf
    • http://www.legionplayers.com/uploads/1/3/0/3/130379354/c3faf78ae9c.pdf
    • http://moloaajuicebar.com/uploads/1/3/0/4/130483385/zejumadijexan.pdf
    • http://sigoaprendiendo.com/uploads/1/3/0/6/130604641/ae8ce16de8fe.pdf
    • http://midlandsallstar.com/uploads/1/3/0/2/130289688/lakiz_lurarisazepa_sezokaneduminin.pdf
    • http://girlfriendsfitnessparsons.com/uploads/1/3/0/7/130776008/9770839.pdf
    • http://mail.ntbcchambersburg.com/uploads/1/3/0/6/130639115/golemozojakuni.pdf
    • http://www.socialanxietydoc.com/uploads/1/3/0/4/130477890/b1bc1.pdf
    • http://radissonbluhotelkigali.devsite-1.com/uploads/1/3/0/6/130639531/130639531.html#excel+spreadsheet+test+plan+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003af0.bin
3f9ceea5943550da56864570192f14113af06ec92982b6448918871866c5a903		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3AF0 8484 bytes

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