Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f6e0da49ac5197b…

MALICIOUS

PDF

37.7 KB Authoring application: ImageMagick
MD5: 33f5b2009aa911529274041a87258d99 SHA-1: 2b73c7d66e37d2859dbb1270cf40d9903ef4e54e SHA-256: 1f6e0da49ac5197b01cd2da995ca444e58e3db1a87c79ee49881c0a05d10b488
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The document body is heavily obfuscated and does not provide clear textual clues, but the heuristic firings and the sheer volume of linked PDFs point to a campaign distributing malicious content.

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://chameleonprojects.co.uk/uploads/1/3/0/7/130738962/38ab0dab10f.pdf
    • http://sessionninephotography.com/uploads/1/3/0/8/130874221/memuta.pdf
    • http://belenartleaguegalleryandgifts.com/uploads/1/3/0/6/130620719/4764045.pdf
    • http://709-bonus.site/uploads/1/3/0/7/130775556/9015079.pdf
    • http://thelegalmastermind.com/uploads/1/3/0/7/130738658/448426c1b2.pdf
    • http://davinator.com/uploads/1/3/0/2/130270951/8588861.pdf
    • http://geniusplaylab.com/uploads/1/3/0/6/130639343/novadaxaton.pdf
    • http://nourishsinglemoms.org/uploads/1/3/0/2/130287938/d5f3fdab16f7e.pdf
    • http://micromulsion.com/uploads/1/3/0/7/130738641/20801f9133f31f.pdf
    • http://advancedinstallations.com/uploads/1/3/0/7/130776730/9570e55a60a.pdf
    • http://bisonbobschuckwagon.com/uploads/1/3/0/4/130483480/917345bfcf.pdf
    • http://zdiagnostics.com/uploads/1/3/0/5/130550749/683115143fe.pdf
    • http://culebrasailingcharters.com/uploads/1/3/0/6/130622049/239a1bf95d95d9.pdf
    • http://sakura-pak.org/uploads/1/3/0/2/130272579/kanigid.pdf
    • http://www.lachozaspa.com/uploads/1/3/0/6/130604449/neluvupe.pdf
    • http://neuroactiveexercise.com/uploads/1/3/0/6/130605380/2245603.pdf
    • http://mangocitrus.ca/uploads/1/3/0/7/130775125/4237639.pdf
    • http://viviantung.com/uploads/1/3/0/6/130639231/lerak.pdf
    • http://wakeforestfarmersmarket.org/uploads/1/3/0/5/130590108/5599609.pdf
    • http://x0306805xstreamtravel.xsideas.com/uploads/1/3/0/7/130775729/130775729.html#ayuba+suleiman+diallo+significance
    • http://zdiagnostics.com/uploads/1/3/0/5/130550749/6

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003567.bin
8d73818cdc2cdd9a67a8f2c766e49d863b86aa6f32e98c9570a48de7f11aa8a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3567 7744 bytes

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