Malicious PDF — malware analysis report

Static analysis result for SHA-256 449c68ddb2598d33…

MALICIOUS

PDF

39.0 KB Authoring application: Pdftk
MD5: 33689ba210eff982180049e9210c7ef2 SHA-1: c8002b9cff2232a09e20ecd09cce4461a2ba4001 SHA-256: 449c68ddb2598d33d4a852aa5b30792b9fbd1eec261b647e0160ca4f41a39307
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or distribute a large volume of content, potentially malicious. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample, and the document body content is heavily obfuscated and truncated, preventing a more detailed analysis of its specific intent beyond link 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://cheapmarketplacedeals.com/uploads/1/3/0/5/130546024/wudikamutix-tosetuk-roxadupup.pdf
    • http://esprillo.com/uploads/1/3/0/7/130775630/kupini.pdf
    • http://www.thehilltopbarn.com/uploads/1/3/0/8/130814761/boxalojiziv.pdf
    • http://niram.com/uploads/1/3/0/7/130775784/1375456.pdf
    • http://belatik.store/uploads/1/3/0/5/130551488/kolekutatesovum.pdf
    • http://www.befarrow.net/uploads/1/3/0/2/130271085/6212307.pdf
    • http://localzaa.com/uploads/1/3/0/5/130590596/mubifuzilejig.pdf
    • http://wesleyhooks.com/uploads/1/3/0/6/130639607/vosekipupigumifux.pdf
    • http://friendspan.com/uploads/1/3/0/6/130604165/1368518.pdf
    • http://youcanownbaltimore.com/uploads/1/3/0/7/130775357/7156612.pdf
    • http://amazon-spirit.com/uploads/1/3/0/9/130969329/pizupoxusura.pdf
    • http://raulfortes.com/uploads/1/3/0/7/130775880/4303562.pdf
    • http://briarwoodestatesapt.com/uploads/1/3/0/5/130538937/waderepaxud_jisixunigisuxe_bobum_xifejizixosuka.pdf
    • http://streetwerkzcustoms.com/uploads/1/3/0/5/130538987/bfdcf49790.pdf
    • http://manawell.net/uploads/1/3/0/2/130287542/6974813.pdf
    • http://airporthoppermaynooth.com/uploads/1/3/0/6/130620957/giwuzezekaseka.pdf
    • http://alexandriasday.com/uploads/1/3/0/2/130288523/gujidomenub_numasumexun.pdf
    • http://foryouxidianka.com/uploads/1/3/0/7/130775085/da53553bbb76a.pdf
    • http://morethanjustaface.nl/uploads/1/3/0/6/130603838/130603838.html#noun+clause+multiple+choice+exercises
    • http://briarwoodestatesapt.com/uploads/1/3/0/5/130538937/waderepaxud_jisixunigisuxe_bo

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e47.bin
1b0b9ccafa3a8d4187e86757028d03de598065db96186c0e11ce259314def278		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E47 2684 bytes
font_01_sfnt_off00003a4a.bin
38229420975c8eabeb6ac0a5fcc6f87668da8b6f58b85352de36ad19e45755fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A4A 7984 bytes

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