Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9072094551d0b8c…

MALICIOUS

PDF

33.3 KB Authoring application: Mobipocket Creator
MD5: 21591bf0aa2df1d4fe557f2350453ceb SHA-1: ee4e368caf09bda3b6b517a6eaf5b1357d0fc0b1 SHA-256: c9072094551d0b8ce1f23a935fe5fd25bbba186d75c6fcc55e5ad31c9e4f9d58
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

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://moribanlandscapes.com/uploads/1/3/0/6/130620511/zoligaduvowi_disiwamoz_kuwesizebisura.pdf
    • http://rolltribebaseball.net/uploads/1/3/0/6/130621298/lupogelizixinop-rowezuwokabadeb-remesepab.pdf
    • http://mossgardennursery.net/uploads/1/3/0/2/130289668/jatasukum-xivomin-kipupogujodut-nubemifane.pdf
    • http://jewezub.thetracker.online/uploads/2020/01/28/vebanejanu.pdf
    • http://mylesateliersdenine.com/uploads/1/3/0/5/130543045/87d46c2fc2.pdf
    • http://kenya-help.org/uploads/1/3/0/4/130476417/7351738.pdf
    • http://vecturasales.com/uploads/1/3/0/5/130539516/lobenizimakuz_vulofa_lenoma_vogefo.pdf
    • http://m.kaltydesigns.com/uploads/1/3/0/5/130547812/7971232.pdf
    • http://babyfairy.org/uploads/1/3/0/2/130272092/kigupirifefiz.pdf
    • http://djsacademy.com/uploads/1/3/0/7/130775143/130775143.html#formal+charge+of+boron+in+bh3

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001277.bin
e9c6a40cdea2b932a658cb2d06900986813e1b1fabf6a9ce3c7169c938c8aef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1277 7592 bytes

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