Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c922c519752c76c…

MALICIOUS

PDF

42.0 KB Authoring application: GIMP
MD5: 10ea5ea9e15b2337770498abbd74f47c SHA-1: 91f0180fef59f7e0606b1d992bf3c562dab749c5 SHA-256: 3c922c519752c76ce87a0d00c626f9f316e459d6741e2c47cb43a1ebb2a4ee78
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, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to drive traffic to these external resources, potentially for SEO manipulation or to host phishing content. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://betterwebmail.com/uploads/1/3/0/5/130551944/zarifavan.pdf
    • http://crazyfoxfit.com/uploads/1/3/0/4/130483047/6472340.pdf
    • http://stoutmortgage.com/uploads/1/3/0/5/130540559/tiwulazuta.pdf
    • http://notasportsbar.ca/uploads/1/3/0/5/130540583/1789618.pdf
    • http://bdmchallenge.com/uploads/1/3/0/6/130604627/3c981071.pdf
    • http://buecard.com/uploads/1/3/0/5/130545745/8186835.pdf
    • http://k9-lifestyle.com/uploads/1/3/0/6/130620956/6232171.pdf
    • http://www.2amepiphany.com/uploads/1/3/0/6/130621131/zuvuxa.pdf
    • http://rzlifecoach.com/uploads/1/3/0/7/130776734/71b5d.pdf
    • http://nvintl.com/uploads/1/3/0/5/130588277/rukadodezusejen.pdf
    • http://musicinmyneighborhood.com/uploads/1/3/0/5/130589399/gosevowilunotuguded.pdf
    • http://www.hamakuainspectors.com/uploads/1/3/0/5/130550828/ruvafu_jafisep_gefagom.pdf
    • http://djsacademy.com/uploads/1/3/0/4/130476594/59822.pdf
    • http://thorntonheathcricket.co.uk/uploads/1/3/0/4/130436258/6693491.pdf
    • http://canyonman.org/uploads/1/3/0/5/130588821/netepevuwefe_ditanuwedudego_gelafobizilo.pdf
    • http://mta-sts.mx.deborahvoss.com/uploads/1/3/0/2/130272424/7089536.pdf
    • http://nijacode.com/uploads/1/3/0/5/130589135/2deceb9.pdf
    • http://moneymatchgaming.com/uploads/1/3/0/7/130776823/lafak.pdf
    • http://djmichaelsimon.com/uploads/1/3/0/4/130483591/teseratudotupet.pdf
    • http://pattayabeachproperty.com/uploads/1/3/0/6/130604288/ad524d518b.pdf
    • http://summoningstone.janaoliver.com/uploads/1/3/0/7/130776409/pigejegifexuw_lalofa_ferezinemarax.pdf
    • http://74-123-79-169.mgwnet.com/uploads/1/3/0/7/130740086/130740086.html#door+access+control+system+wiring+diagram
    • http://thorntonheathcricket.co.uk/uploads/1/3/0/4/130436258/6693491.p

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c79.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C79 16036 bytes
font_01_sfnt_off00004367.bin
d0678b6603c03d5296a033ad32d57c36cd985d7ca00e16e6d065e4f06ee557ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4367 7868 bytes

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