Malicious PDF — malware analysis report

Static analysis result for SHA-256 d88a8bad3cc230ce…

MALICIOUS

PDF

35.4 KB Authoring application: Inkscape
MD5: e1bb9fcd1d561701a91e5a176f0597f0 SHA-1: 1eb1d7d1d09dcff67949a0df8e52f9f99e0f193f SHA-256: d88a8bad3cc230ce9fc7d7544cf0312d2f120bf05b9a619d5d741eff599cc000
152 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous external PDF URLs, indicating a phishing or redirection attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to distributing further malware or phishing content. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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://eeworkshop.net/uploads/1/3/0/2/130289745/9619285.pdf
    • http://baystategalvanizing.com/uploads/1/3/0/2/130288430/823386.pdf
    • http://sligergames.com/uploads/1/3/0/5/130551004/doserogu.pdf
    • http://treatui.com/uploads/1/3/0/5/130540882/8592698.pdf
    • http://www.talentconsultingretail.com/uploads/1/3/0/6/130639924/7466438.pdf
    • http://vancouvereastvillage.net/uploads/1/3/0/3/130379178/8487795.pdf
    • http://paulwilsongolfschool.com/uploads/1/3/0/3/130323709/7e95909834c8b7c.pdf
    • http://daniellesmakeupcreations.com/uploads/1/3/0/7/130776017/sovafopiwemudixedov.pdf
    • http://infernoregion.com/uploads/1/3/0/6/130621202/rijakatokupip-mutorupuruvi-gipog-lasesi.pdf
    • http://triamantdigital.com/uploads/1/3/0/7/130740141/2267647.pdf
    • http://susanrydberg.com/uploads/1/3/0/6/130639538/e4b8b.pdf
    • http://x0940502xstreamtravel.xsideas.com/uploads/1/3/0/7/130776056/130776056.html#how+to+use+neilmed+sinus+rinse+packets

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000346f.bin
21498f779649c2a412ccc7dc5a8fff4a35f3f209892e49240a01db16053df6b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x346F 7572 bytes

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