Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb6632c247ca0f8…

MALICIOUS

PDF

32.5 KB Created: 2020-03-15 06:20:23 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b333181a47ad3756a3c090b48ae59a7e SHA-1: 7cf42f6ac531576fe85acab115a68504624d3443 SHA-256: 2eb6632c247ca0f89278f4599d7735bfce8ca26c993cf1f552f3c8b8bc633fe8
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named PDFs, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains references to an 'Anchor bolt installation manual' and the wkhtmltopdf application, which is often used to generate PDFs from web content. The presence of numerous unknown-reputation URLs indicates a high likelihood of redirection to malicious sites for phishing or malware delivery. No scripts were extracted from this sample.

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://theclassyandjazzyboutique.com/uploads/1/3/0/5/130539338/130539338.html#anchor+bolt+installation+manual
    • http://abundant-lifechurch.com/uploads/1/3/0/8/130874017/2086949.pdf
    • http://amodernplace.com/uploads/1/3/0/6/130604254/kenulugukujepe.pdf
    • http://mx.eeborton.com/uploads/1/3/0/4/130488884/6766389.pdf
    • http://ogdenweber.org/uploads/1/3/0/4/130483584/pixetemuk-rudebodaluwogu.pdf
    • http://adenova.es/uploads/1/3/0/5/130551129/788d6722a.pdf
    • http://leadinglocallyforsmallbiz.com/uploads/1/3/0/7/130776157/2095c.pdf
    • http://minerup.com/uploads/1/3/0/5/130589442/meziwifa_kowivupewofejo_vufebawujum_kedetujo.pdf
    • http://stephenharrisonweb.com/uploads/1/3/0/2/130288321/4b3ac0.pdf
    • http://allthingsluxeboutique.com/uploads/1/3/0/5/130550938/9be6464e2e4865b.pdf
    • http://fitphysiquepersonaltraining.com/uploads/1/3/0/4/130488749/tizikoxojaroxibogi.pdf
    • http://guiascomerciais.com/uploads/1/3/0/7/130739624/4776876.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057b1.bin
2d997e774a88a85e165f915f413892fbaaf343e823d52f77a8a13f805874b52a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B1 7584 bytes

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