Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba8ea1ecfaab3b06…

MALICIOUS

PDF

42.7 KB Created: 2020-04-02 09:23:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b3bbd742d732f4170f2cdaa7e58636b2 SHA-1: cb30b15ca90c9e6e27ac79bfea3f9d0cb552a5e4 SHA-256: ba8ea1ecfaab3b068e950d545211597d92779944454eb937f11515e95135262d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 Malicious Link

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the observed link farm pattern.

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://blackhawbuilders.com/uploads/1/3/0/5/130539097/130539097.html#el+amor+verdadero+si+existe+frases
    • http://bootlegrp.com/uploads/1/3/0/5/130540401/cba32.pdf
    • http://metzkerconsulting.com/uploads/1/3/1/3/131398252/bc8d53d.pdf
    • http://amyonearth.com/uploads/1/3/0/4/130435772/wakisikujorexun-muwutakos.pdf
    • http://funkandswagger.com/uploads/1/3/0/5/130551351/6f48608c4.pdf
    • http://sheqplanet.com/uploads/1/3/0/7/130775171/vusegodedolelibije.pdf
    • http://rentinamericanfork.com/uploads/1/3/1/4/131437655/lomeguzoxijametuful.pdf
    • http://fertilmed.com/uploads/1/3/0/4/130489564/saxorupaxopanaru.pdf
    • http://cotherstonecoal.com/uploads/1/3/0/6/130640218/4938409.pdf
    • http://joystagela.com/uploads/1/3/1/3/131398004/zosafefil.pdf
    • http://webgripinc.com/uploads/1/3/0/7/130738912/cf17f26fa680.pdf
    • http://mindfulcollegeadmissions.com/uploads/1/3/1/4/131407083/8452748.pdf
    • http://thehatpursecorporationofamerica.com/uploads/1/3/0/5/130589058/madudujifuw.pdf
    • http://legendarymotorcar.net/uploads/1/3/1/0/131070375/4557701.pdf
    • http://unicornsandwe.com/uploads/1/3/0/8/130874143/zefebazikorule.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_off00007afb.bin
7cc677f12aa42c9242bb534d4b9134a4ee9127b1583696b9c01cf86d010a4cf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFB 9144 bytes

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