Malicious PDF — malware analysis report

Static analysis result for SHA-256 903b2a2f8e338198…

MALICIOUS

PDF

42.9 KB Authoring application: Inkscape
MD5: 3641a4025858cb3f07f070ae6f2963f0 SHA-1: dd2c51062ab503d492294d486dbfc471f5a937c1 SHA-256: 903b2a2f8e3381985294376c8867c49c19f68af7c6b1b8c6ed87a7193b5bced4
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, indicating a link farm or redirection scheme. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly suggest malicious intent. The primary attack pattern involves leveraging these external links, likely to distribute phishing content or malware.

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://drashmani.com/uploads/1/3/0/3/130313294/zabozexovez_zadomojil.pdf
    • http://dietcenter.es/uploads/1/3/0/7/130739927/pupokogekufiv.pdf
    • http://bestofthemenu.com/uploads/1/3/0/3/130313590/gawumubigun_nutetok_zajak_mowezexixisuto.pdf
    • http://novateckfloor.com/uploads/1/3/0/6/130639348/zobobuli-dinupuvuwedo.pdf
    • http://schallisflyfishing.de/uploads/1/3/0/6/130639861/8382830.pdf
    • http://carmendaughertyphotography.com/uploads/1/3/0/2/130287943/2908813.pdf
    • http://morethanfood.net/uploads/1/3/0/6/130622051/kezumabage.pdf
    • http://aeroagt.com/uploads/1/3/0/4/130478882/tapanafimafeto_tufonawunef.pdf
    • http://noahcompportfolio.com/uploads/1/3/0/5/130590215/7454984.pdf
    • http://paralaventa.net/uploads/1/3/0/4/130476407/nanijapedixa.pdf
    • http://asociacionperiodistaspr.org/uploads/1/3/0/7/130740393/130740393.html#biosecurity+plan+template

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001291.bin
154110909dbbcc67fa593ce88ce3ec9060593b02e6923f0deed0b15e93a8360a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1291 8424 bytes
font_01_sfnt_off00006d21.bin
41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D21 2600 bytes

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