Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa1f23b57ebb8a70…

MALICIOUS

PDF

36.5 KB Authoring application: Pdftk
MD5: 4e31093f1b722767214a95089cf81e42 SHA-1: 3b1f66b12ac4899842afe209d5079e7d60feff2f SHA-256: fa1f23b57ebb8a70f168ffbd6edeb83b498492d91f1df5554f499feb1983b31b
120 Risk Score

Malware Insights

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

The PDF file was detected by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a large number of embedded URLs, forming a link farm. The heuristic PDF_SEO_LINK_FARM specifically flags this behavior, indicating the document's primary purpose is to redirect users to a network of other PDF files, likely for SEO manipulation or to host phishing content.

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://nowallsministry.net/uploads/1/3/0/4/130483491/3710771.pdf
    • http://newenglandopportunityproject.org/uploads/1/3/0/7/130739505/ebd0bc0fc27f1ab.pdf
    • https://mebirewoxaxe.weebly.com/uploads/1/3/0/5/130540559/8ce06a9b4.pdf
    • http://mkwpartners.com/uploads/1/3/0/5/130545895/bonapos_nagelorebuz.pdf
    • http://veronahot.com/uploads/2020/01/28/wozasekudewetow.pdf
    • http://bodybarn.net/uploads/1/3/0/2/130289352/vemelejuzaroj.pdf
    • http://rivercitymoto.com/uploads/1/3/0/4/130435637/5090915.pdf
    • http://adoptme.info/uploads/1/3/0/6/130604379/130604379.html#scarcity+vs.+abundance+mindset

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001137.bin
5640ea2548b1a23212e972a46e070c9c408f38ac98673092c781255f039541c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1137 7768 bytes

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