Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc50e6c0772bc41…

MALICIOUS

PDF

38.0 KB Authoring application: Poppler-utils
MD5: df251e6199b0a77f113ca18281c7157d SHA-1: 57810b1ac28091da833d4471a2e32f72b44feec9 SHA-256: 0bc50e6c0772bc41d0edd3eecb6c7a0efa630683782b0d584b027e4e0ec1676f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to other PDF files hosted on various external domains, indicating a link farm or redirection mechanism. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The document body contains garbled text and a few URLs, but the primary malicious indicator is the extensive link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://nalacc.com/uploads/1/3/0/7/130775033/faxidilipibunapu.pdf
    • http://modernparentingnetwork.com/uploads/1/3/0/6/130603744/792566.pdf
    • http://bodysoulhealing.net/uploads/1/3/0/7/130739500/3187071.pdf
    • http://artworkrunner.com/uploads/1/3/0/6/130603995/wugafon-zufonolono-nomatavi-nosebele.pdf
    • http://movies-music-and-games.com/uploads/1/3/0/7/130739924/pumerudif.pdf
    • http://kchcapital.com/uploads/1/3/0/4/130489038/d8588296.pdf
    • http://secretgourmetpicnic.com/uploads/1/3/0/5/130550858/jovifunogag.pdf
    • http://nawebworks.co.uk/uploads/1/3/0/7/130739301/e343f9.pdf
    • http://drumvoice.org/uploads/1/3/0/4/130489706/18955.pdf
    • http://bluecornconsultingllc.com/uploads/1/3/0/7/130775291/5378576.pdf
    • http://messinger-systems.com/uploads/1/3/0/5/130540266/pimuveg.pdf
    • http://mtidaarkansas.com/uploads/1/3/0/4/130492689/peson.pdf
    • http://garysresume.com/uploads/1/3/0/4/130483770/kujej_xamulu_fitig_kenavija.pdf
    • http://michaudsblog.com/uploads/1/3/0/6/130620631/vopufiwiv.pdf
    • http://fynnad.store/uploads/1/3/0/6/130605001/xekerimomogivi_girabigapepeg_renimigiruduwom.pdf
    • http://elyaqui69.com/uploads/1/3/0/5/130543261/kiwuzegotuf.pdf
    • http://rootedinmma.com/uploads/1/3/0/4/130476074/860175.pdf
    • http://jackpassion.net/uploads/1/3/0/3/130313180/bomesufedipekami.pdf
    • http://host115.carmichaelnl.com/uploads/1/3/0/7/130776695/130776695.html#febrile+seizure+paediatric

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003842.bin
4339e187996f1bbe2240f4c67765920179b6b4f1a79113b17d328920235b4eac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3842 7480 bytes

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