Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f920a3c64b3efc2…

MALICIOUS

PDF

48.1 KB Authoring application: SWFTools
MD5: fd2fa567df76ed96792b98ed900b0309 SHA-1: 3129531f4658bb312995530d42e7f8e2c3eaa31e SHA-256: 2f920a3c64b3efc2b6eba3bc9d9ecbd0d304959c88e75ee0b3b7863390244f11
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, aligning with the PDF_SEO_LINK_FARM heuristic.

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://uphoneitin.com/uploads/1/3/0/7/130775396/witumununuwak-lasiwomir-mopipesuzeribe-bebuwugeregi.pdf
    • http://pordenone.rocks/uploads/1/3/0/7/130739746/tosixizujoru_gegiva_losisurulun_bovazisebagig.pdf
    • http://thepaintedvinecellar.com/uploads/1/3/0/3/130313383/noduxawexadizeguluk.pdf
    • http://instagram1000.com/uploads/1/3/0/4/130483806/64c3807a829.pdf
    • http://ivyadvance.net/uploads/1/3/0/5/130588272/vonejunib.pdf
    • http://worldwidefactoring.com/uploads/1/3/0/6/130620280/2740001.pdf
    • http://www.buenoscience.com/uploads/1/3/0/5/130551247/kivowi_tipef_polokolav.pdf
    • http://allbodiesbeautiful.com/uploads/1/3/0/5/130552017/b5287.pdf
    • http://shockbuilder.com/uploads/1/3/0/6/130640102/jozus.pdf
    • http://coreymangesjunior.org/uploads/1/3/0/5/130542936/3399983.pdf
    • http://salestrainingcourse.org/uploads/1/3/0/4/130435682/zemenu.pdf
    • http://trevirent.com/uploads/1/3/0/4/130483491/9033213.pdf
    • http://nxlevelphysicaltherapy.com/uploads/1/3/0/4/130478106/kotemopadalola.pdf
    • http://mail.makebelievemedia.co.za/uploads/1/3/0/6/130622103/4696283.pdf
    • http://miam-foundation.com/uploads/1/3/0/6/130605490/sulalaki.pdf
    • http://hairservestoyou.com/uploads/1/3/0/6/130603873/d90b7228fd3.pdf
    • http://wallawallatreecare.com/uploads/1/3/0/6/130639230/kakikuxi.pdf
    • http://moyo-up.de/uploads/1/3/0/7/130775129/gudoguzapixazan_sipobopunazas_fenotojazimi_vawimojofe.pdf
    • http://threedeetwodee.com/uploads/1/3/0/8/130813639/mevedijugumed-zanit-motujowadib-gaxiti.pdf
    • http://davidhoover.net/uploads/1/3/0/5/130588966/bovijuta_sujupuvidufubej_genifi.pdf
    • http://northernsound.com/uploads/1/3/0/5/130550818/151131.pdf
    • http://hcneywell.com/uploads/1/3/0/5/130589037/dinumuz.pdf
    • http://purephoenix.tv/uploads/1/3/0/5/130550914/sapadonaxiweraraku.pdf
    • http://taiyangchengmsc33.br3h.com/uploads/1/3/0/4/130435639/130435639.html#enterohemorrhagic+e+coli+medscape

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000580d.bin
238cf818f80c3e2814921c3fc7ca8eb8976112a3c170ae433a1f59323226c706		 pdf-font-stream PDF embedded font (sfnt) at offset 0x580D 9076 bytes

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