Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d4365357420ced…

MALICIOUS

PDF

38.2 KB Created: 2020-04-15 13:04:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 98b66484f6143f76b250c64eaa8be783 SHA-1: 6222b2588d4e3d932f21725b0fa2596fae9c031a SHA-256: 29d4365357420cedb958120bd235eb0ecdc638b26bae87e53a55bc61f600a4dc
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to similarly structured URLs on different domains, indicating a link farm or SEO abuse tactic. The document body, though heavily obfuscated, contains a reference to 'gba emulator games android' and a URL that matches this theme, suggesting a lure to a malicious website. The ML classifier strongly flagged this PDF as malicious.

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://familyandadultdentistry.com/uploads/1/3/0/4/130436298/130436298.html#gba+emulator+games+android
    • http://lisaslimos.com/uploads/1/3/0/5/130538866/ferowi-soneluvab.pdf
    • http://yourflexpack.com/uploads/1/3/0/7/130775447/0f591147133309.pdf
    • http://thomassem.com/uploads/1/3/1/4/131455508/nonefapaxak.pdf
    • http://vaylink.com/uploads/1/3/0/4/130489536/sutalekaxome.pdf
    • http://northwestbuildersheridan.com/uploads/1/3/0/4/130436080/pesorekenosa.pdf
    • http://velez.com/uploads/1/3/0/5/130540077/garuliwuxa_mekogavebabirut_momizijamu_soxilut.pdf
    • http://lloydvalleyconstruction.com/uploads/1/3/0/6/130604823/131c6ce32630.pdf
    • http://sfbaytherapist.com/uploads/1/3/0/7/130739662/boxuwopamulomolozu.pdf
    • http://scopeub.com/uploads/1/3/0/6/130639837/lotemagozufot.pdf
    • http://oventafoods.com/uploads/1/3/0/2/130272606/fumusuvujofewa.pdf
    • http://kellyhalpern.net/uploads/1/3/0/5/130589174/naluru.pdf
    • http://awoods.vip/uploads/1/3/0/4/130491075/xililugotiwo.pdf
    • http://stevetopdog.com/uploads/1/3/0/6/130639115/rujeku.pdf
    • http://p3fg.com/uploads/1/3/0/4/130483459/1452245.pdf
    • http://oventafoods.com/uploads/1/3/0/
    • 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_off00006d3a.bin
80cad291e0a531905ba8ce6ee84afb758ad23f989104ce61f4c58fcb559fca00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3A 7700 bytes

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