Malicious PDF — malware analysis report

Static analysis result for SHA-256 703e41dabb7580cc…

MALICIOUS

PDF

33.9 KB Authoring application: Karbon
MD5: d034d26a91c16ec7f8f4d4f5284314f2 SHA-1: e24b286fe0c6a0e5f8fec3633cb2b2335d010e4b SHA-256: 703e41dabb7580cc0a49e673b79edb88d17b3655ba21fa5ebc494e3ba35481f7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to other PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these linked documents.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://patrickvbrownfineart.net/uploads/1/3/0/5/130589098/nogekufijugaje-sobok.pdf
    • http://metalgiftideasandmor.com/uploads/1/3/0/7/130776074/1291640.pdf
    • http://mta-sts.oaklawnbaptistchurch.org/uploads/1/3/0/6/130621354/gexajikurinubalafivu.pdf
    • http://ammaartdebienetre.com/uploads/1/3/0/5/130539309/f36338.pdf
    • http://bloodandmagic.com/uploads/1/3/0/5/130540795/9694808.pdf
    • http://artistofinkandpaint.com/uploads/1/3/0/7/130739162/gajuzutetumi-dobapede-fuvure.pdf
    • http://trevordewitt.com/uploads/1/3/0/3/130379202/3170f8e1d1cb0d0.pdf
    • http://cornellacademy.com/uploads/1/3/0/2/130287266/1826539.pdf
    • http://myenvisionphotography.com/uploads/1/3/0/6/130620309/pujukopezed.pdf
    • http://shipbidder.com/uploads/1/3/0/8/130814717/sigidufadusugu_bedusenawuf.pdf
    • http://tipnology.com/uploads/1/3/0/8/130873982/puvepa.pdf
    • http://www.blondeambitonband.com/uploads/1/3/0/5/130588876/130588876.html#maximum+magnifying+power+of+simple+microscope

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eaf.bin
005fbd31f94cf45e17c3e714bb8da63f8003551410fa140eb7f5d5899a2e9568		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAF 7408 bytes

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