Malicious PDF — malware analysis report

Static analysis result for SHA-256 539a11343edff482…

MALICIOUS

PDF

36.0 KB Authoring application: Serif PagePlus
MD5: 5a18e52c3f2d03c2287938d4688e3121 SHA-1: 8f716f4a75a89d54a4c1b856208bdad6780d4cdf SHA-256: 539a11343edff48291d206b446bcd03ad48e3e762e3a74ff6f4a14ce0bad0b09
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body, though partially obfuscated, also contains several of these URLs. This suggests the primary purpose is to redirect users to external resources, potentially for SEO manipulation or to serve malicious content. The ClamAV detection further supports its malicious nature.

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://bingscatering.net/uploads/1/3/0/3/130323479/sonebi_soselejakese_nudataravoxima.pdf
    • http://straightpipeexhaust.com/uploads/1/3/0/4/130488834/f3722c8.pdf
    • http://ourworldisnotflat.com/uploads/1/3/0/6/130639448/7eab42da7a.pdf
    • http://bigboatshow.com/uploads/1/3/0/6/130620874/865666.pdf
    • http://rehphotography.org/uploads/1/3/0/4/130483634/7f41a7faf77e04f.pdf
    • http://tobler-design.ch/uploads/1/3/0/6/130640123/zudorojuzo-polug-rumigutemu-zejew.pdf
    • http://oaklandzendo.org/uploads/1/3/0/6/130639162/womor-ritubogumizisal-remasuzoz-bigufevibivazu.pdf
    • http://jiw.huba.tech/uploads/2020/01/28/ace6968bed4c40.pdf
    • http://cccvancouver.com/uploads/1/3/0/6/130605072/130605072.html#agenda+2063+ua+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001241.bin
f84f866337a1147a5f5770bed726189b938e1127bb879c8c5c4434ce66a47366		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1241 9032 bytes

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