Malicious PDF — malware analysis report

Static analysis result for SHA-256 33a67955757cef15…

MALICIOUS

PDF

32.7 KB Authoring application: PDF Studio
MD5: c28423c6ecbd4643cae9e50411e5fdbe SHA-1: 1e708a9eb8b6832f35aa6c0f7140fe0793f3a76f SHA-256: 33a67955757cef15b3b81ff426c17496d33cf72cd70dd04c9d63af83a5470b09
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents, indicative of a link farm or redirection scheme. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly suggest a phishing or malicious redirection campaign. The document body, though heavily obfuscated, contains references to Skechers and Adobe, potentially used as lures.

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://astridbadell.com/uploads/1/3/0/4/130491063/fusijajemajodepuxosi.pdf
    • http://martayogahome.com/uploads/1/3/0/6/130621276/7075823.pdf
    • http://athenahighlibrary.com/uploads/1/3/0/6/130604388/75569dd08fa48ea.pdf
    • http://readoldhandwriting.com/uploads/1/3/0/3/130323597/da83352d91.pdf
    • http://mcaproviders.com/uploads/1/3/0/4/130436020/5030638.pdf
    • http://danhixsonphotography.com/uploads/1/3/0/7/130740092/9075153.pdf
    • http://inscienceitrust.net/uploads/1/3/0/5/130551144/6120743.pdf
    • http://freerunbasics.com/uploads/1/3/0/2/130274024/leledotalubame-fupamifawopuro-parigodiretupa-gojuxifuxawiler.pdf
    • http://patriciajaggie.com/uploads/1/3/0/5/130551864/kutizipidavasa.pdf
    • http://lemonews.com/uploads/1/3/0/5/130551399/120db83c8630e.pdf
    • http://readyplayerone.store/uploads/1/3/0/5/130546237/879bebbd43c18.pdf
    • http://www.nikkiwetherellcounseling.com/uploads/1/3/0/5/130541346/130541346.html#skechers+girl+shoes+size+chart
    • http://patriciajaggie.com/uploads/1/3

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002834.bin
50ee25712b23292f2f771d3c57137b44bc2ea0a051d4c32e285f0659ef12d0d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2834 8020 bytes

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