Malicious PDF — malware analysis report

Static analysis result for SHA-256 143a0ec15094035e…

MALICIOUS

PDF

37.4 KB Authoring application: Adobe PDF Library 9.0
MD5: ed2de8660e3d4e4e060eaea385ee5c9e SHA-1: 32f84240d02bc2521e2bcdd592e74d1bcb2a68f7 SHA-256: 143a0ec15094035eaf348b8333f16a6e7c95b6c99b436ac87a7c91bd69782d71
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a phishing or content distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://t-vic.com/uploads/1/3/0/5/130590168/zudododalu.pdf
    • http://wayjayjetwas.com/uploads/1/3/0/5/130590217/xobewimamebalem.pdf
    • http://musclesandmimosas.us/uploads/1/3/0/7/130775593/9243cca63.pdf
    • http://nycraftworks.com/uploads/1/3/0/4/130483045/wutegime.pdf
    • http://mhhsfootball.mtnhomesd.org/uploads/1/3/0/4/130483872/8787777.pdf
    • http://treinasoft.net/uploads/1/3/0/5/130588931/4273698.pdf
    • http://rucomingout.com/uploads/1/3/0/6/130604550/gowefonenipo.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/6/130604226/130604226.html#ikea+kitchen+design+services

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000112a.bin
d993e9a72c3e788a12ddc1a9fbc84673e084a77c8919ca78279f19a9cd6cc8c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112A 8796 bytes

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