Malicious PDF — malware analysis report

Static analysis result for SHA-256 375b00bd018b9661…

MALICIOUS

PDF

38.7 KB Created: 2020-04-17 12:16:32 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 05943c395c18aef6a60a6e8c9b71e47e SHA-1: 3b6df28c19bc2a09e4f622e472801381aaf09708 SHA-256: 375b00bd018b96618c5a623e662fc7c18a65c1d560284ff2d998dfd8c18bbc9e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though heavily obfuscated, contains text related to 'free science powerpoint templates', suggesting a lure to attract clicks. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates a malicious intent to generate traffic or distribute further payloads via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://neokundalini.org/uploads/1/3/0/4/130436315/130436315.html#free+science+powerpoint+templates+backgrounds
    • http://lisagarcia-rivera.com/uploads/1/3/0/8/130874422/zajebasujek.pdf
    • http://djmomradio.com/uploads/1/3/0/9/130969884/jodaw.pdf
    • http://mrsmoothbeatz.com/uploads/1/3/1/3/131379381/gabudi-jomipoziminofof-sazebot.pdf
    • http://threeclouds.de/uploads/1/3/0/6/130620538/rewovotoxisilo_kupej.pdf
    • http://slsymphonicwinds.org/uploads/1/3/0/5/130588548/837515.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_off00006edf.bin
2ea3d97c8ffd5958086dc69823175650291a52e4317fc69278f02e4c4ee4e8d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDF 7720 bytes

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