Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf83c3790cdde32a…

MALICIOUS

PDF

36.3 KB Authoring application: PDF Studio
MD5: 4b08cb706edec6ea5db2b18a737b53eb SHA-1: 12a9a6c27bea0ee2fb552990486bb1b052c366dd SHA-256: cf83c3790cdde32a022b323bdc0d5fea76b2d06ab59ca7396d691e404d83c608
120 Risk Score

Malware Insights

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

The PDF document was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a significant number of embedded external links, characteristic of a link farm used for SEO manipulation or to distribute malicious content. The heuristic PDF_SEO_LINK_FARM specifically identified this pattern, indicating the document's primary purpose is likely to redirect users to other sites.

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://hypnotherapymusic.net/uploads/1/3/0/6/130604312/2533350.pdf
    • http://webdisk.3-pc.ca/uploads/1/3/0/8/130814586/1922985.pdf
    • http://freedomministriesnw.org/uploads/1/3/0/2/130289557/cab6802aaff55cf.pdf
    • http://psicologiapublica.org/uploads/1/3/0/7/130738902/c479ef2ce3.pdf
    • http://magna-core.net/uploads/1/3/0/7/130775056/23f01bc29e.pdf
    • http://firstbranchcollaborative.org/uploads/1/3/0/5/130542936/fexuwuzu-sejoxenivos.pdf
    • http://greatsaltlakephotography.com/uploads/1/3/0/6/130605448/3978228.pdf
    • http://lockton.services/uploads/1/3/0/6/130640239/safaribepis.pdf
    • http://artistblueprintpublishing.com/uploads/1/3/0/2/130287314/823855.pdf
    • http://cleaningservicesedm.ca/uploads/1/3/0/6/130621865/tumusitu.pdf
    • http://thatyoumaybelieve.com/uploads/1/3/0/7/130776073/nasolazi.pdf
    • http://cabinetdanconsulting.com/uploads/1/3/0/7/130775737/filoredu_vemepu_poxuzijuje_noziduk.pdf
    • http://palestinewildcatfootball.com/uploads/1/3/0/5/130588203/85d9aefa.pdf
    • http://spencertunickbooks.com/uploads/1/3/0/7/130776735/gaporuvusosine-zifisa.pdf
    • http://wwwshop.good-doggo.net/uploads/1/3/0/6/130605493/juzorem-latudideret-zesilep-fakexixa.pdf
    • http://longchengyulecheng.br3h.com/uploads/1/3/0/4/130435771/130435771.html#ableton+live+10+suite+vst
    • http://firstbranchcollaborative.org/uploads/1/3/0/5/130542936/fexuwuzu-sejoxenivos.pd

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000285f.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x285F 2652 bytes
font_01_sfnt_off00003418.bin
8a3253fa393ec2fcade6570cf14252b4e259489a4106dddd4561e70595d8dd3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3418 7380 bytes

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