Malicious PDF — malware analysis report

Static analysis result for SHA-256 df2988adc4afb7f3…

MALICIOUS

PDF

37.4 KB Authoring application: Soda PDF
MD5: ae6671c409536cedffa008e393d313e6 SHA-1: 48e93fc7337591ae646744841f80ef3575b96eba SHA-256: df2988adc4afb7f3f2665a0d7c42c6f64d78653c53d5030c7bc16dc4092d0242
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies the mass external PDF link farm, with 'attritionphysicians.com' being the dominant host. No scripts were extracted, but the sheer volume of linked PDFs suggests a campaign to drive traffic or deliver malicious payloads indirectly.

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://attritionphysicians.com/uploads/1/3/0/5/130539338/349c5bdcde25ca8.pdf
    • http://credit-default-swap-attorneys.com/uploads/1/3/0/6/130639217/874def035.pdf
    • http://staceyjanedouglas.com/uploads/1/3/0/3/130379803/c9cea96587cb70.pdf
    • http://naturalrobotics.net/uploads/1/3/0/7/130739678/9693349.pdf
    • http://muslimmilitarystories.com/uploads/1/3/0/6/130605078/7a4ac78.pdf
    • http://extraordinaryliving.biz/uploads/1/3/0/5/130539021/e1e4e8ef6be.pdf
    • http://www.gnbuilding.com/uploads/1/3/0/6/130604311/vumupilorot_xoneregivusom_bumili.pdf
    • http://affinityforever.com/uploads/1/3/0/7/130739235/zaxudaro.pdf
    • http://www.northcountryperformanchorses.com/uploads/1/3/0/5/130540788/julexavoruxikuteg.pdf
    • http://thecheekychicboutique.net/uploads/1/3/0/7/130739223/2516afd861.pdf
    • http://giftedteach.com/uploads/1/3/0/7/130776827/rekurajuleb.pdf
    • http://www.bc-merch.com/uploads/1/3/0/5/130590508/domekutujufuru_tujejime_madad_kodoveborese.pdf
    • http://connelyhitnews.com/uploads/1/3/0/8/130815437/1520079.pdf
    • http://www.alanmyersphotography.co.uk/uploads/1/3/0/6/130621507/xekij-vewab.pdf
    • http://osakahoumausa.com/uploads/1/3/0/6/130639133/e9604b3a93.pdf
    • http://www.maddyryanboutique.com/uploads/1/3/0/6/130640119/sixibodaxinikudon.pdf
    • http://websitetransformer.com/uploads/1/3/0/7/130738541/55f38cf761.pdf
    • http://www.envirocentre.eu/uploads/1/3/0/5/130545800/ce5c3bb.pdf
    • http://camilamcnemar.com/uploads/1/3/0/2/130271226/bazosunek.pdf
    • http://www.loseweightfasthow.com/uploads/1/3/0/4/130489771/6601489.pdf
    • http://nhvfd18.org/uploads/1/3/0/4/130436074/1205529.pdf
    • http://winningedgegaming.com/uploads/1/3/0/6/130621030/02450f019ea74.pdf
    • http://anuskinesthetics.com/uploads/1/3/0/4/130488387/4048f0313.pdf
    • http://nashobavalleyextractco.com/uploads/1/3/0/8/130874378/130874378.html#dallas+mavericks+directv+schedule
    • http://www.alanmyersphotography.co.uk/uploads/1/3/0/6/1306

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f4b.bin
f1a34184f1e93761eae15ec8139f4af71d841f5779a002b029431e1278095f5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4B 7936 bytes

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