Malicious PDF — malware analysis report

Static analysis result for SHA-256 85df054da8922c7b…

MALICIOUS

PDF

39.4 KB Authoring application: PDFedit
MD5: a5d2e52942991e25cacdc18249b76710 SHA-1: e7b1cc142717cb7eb10a10822d53918d9568b9eb SHA-256: 85df054da8922c7b3d67eb3b1f838b69c126a13a77001acb381c5e70c7b928be
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a PDF link farm. This technique is often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

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://www.sheffield-telephone-engineers.com/uploads/1/3/0/6/130640190/4923004.pdf
    • http://holochainers.com/uploads/1/3/0/4/130475965/2625536.pdf
    • http://bouncyballcatastrophe.com/uploads/1/3/0/6/130604758/gowigesifopazuxixe.pdf
    • http://rvisions.net/uploads/1/3/0/6/130639672/logiroz_wekubuz.pdf
    • http://reachacademytoledo.com/uploads/1/3/0/2/130291971/vurelajesegemad_rolulanekakimu_roravuwiper_fafepaxeji.pdf
    • http://in-house.studio/uploads/1/3/0/6/130621510/adfaa4dc4d.pdf
    • http://jellystonebackgroundchecks.com/uploads/1/3/0/4/130476628/ditezugavekegu_vizeluxa_xunewoxujonumeg.pdf
    • http://tcsoutheastbaseball.com/uploads/1/3/0/5/130551597/disixadibujo_kebej_bojojorij.pdf
    • http://vegamala.net/uploads/1/3/0/5/130588816/xisuzobipovade.pdf
    • http://sjsconstruct.com/uploads/1/3/0/3/130313398/f23a6d3.pdf
    • http://painfulleg.com/uploads/1/3/0/4/130488749/9504986b685071.pdf
    • http://www.cmsaggrk.org/uploads/1/3/0/6/130639283/godolebaburoliza.pdf
    • http://februaryvioletsenior.com/uploads/1/3/0/6/130639155/8573900.pdf
    • http://laketexoma360.com/uploads/1/3/0/7/130776718/4578267.pdf
    • http://workinghunterjumps.com/uploads/1/3/0/7/130776078/litelu-besapadezuve-dinakiri.pdf
    • http://jyotish-yagya.net/uploads/1/3/0/8/130873781/vogajuz.pdf
    • http://stellakidsyoga.com/uploads/1/3/0/3/130379604/5574428.pdf
    • http://dandeliontrade.com/uploads/1/3/0/7/130739067/7768563.pdf
    • http://www.cymrhi.com/uploads/1/3/0/5/130544878/nusumeju.pdf
    • http://mirasana.com/uploads/1/3/0/6/130621636/2240494.pdf
    • http://oceanspringsfestival.com/uploads/1/3/0/8/130874329/821143.pdf
    • http://gabrielelaw.com/uploads/1/3/0/6/130605397/ffac2e360c9ac.pdf
    • http://www.connectatc.org/uploads/1/3/0/7/130775588/96e022fba.pdf
    • http://index92.pleasingfood.com/uploads/1/3/0/5/130588417/130588417.html#age+of+empire+3+asian+dynasties+cheat+engine

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034b8.bin
b1c6db86169d4acb28298366fe95c09f87b823beecb3a95a9a69e8b78c0fe14f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34B8 8828 bytes

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