Malicious PDF — malware analysis report

Static analysis result for SHA-256 e731f963af9242cc…

MALICIOUS

PDF

46.8 KB Created: 2020-05-24 01:05:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0ccf6c9c30019e8f61ffa428517df34 SHA-1: bd0fdcb169b780f6e283df2355c6f6075e551c1b SHA-256: e731f963af9242cc4d9b868f1e4fbba9446334ffea3d13aaff64d69845be6434
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 are numerically or generically named, suggesting a link farm or SEO abuse tactic. The document body, though partially corrupted, indicates it is presented as an 'owner's manual' to lure users to click on the embedded URLs. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://secure-pof.com/uploads/1/3/0/3/130313089/130313089.html#bmx+utv+500+owners+manual
    • http://ezekielzswinford.com/uploads/1/3/2/3/132302863/zipimoxozuda.pdf
    • http://getfit4climbing.com/uploads/1/3/0/4/130483520/94479.pdf
    • http://eswirdeinmal.com/uploads/1/3/0/3/130379638/rikakiroboluke-sutixipaloki-vosanesega.pdf
    • http://theparksphysie.com/uploads/1/3/0/3/130313488/7477120.pdf
    • http://a-onebailbonding.com/uploads/1/3/0/8/130814247/890986.pdf
    • http://rosachiquelingerie.com/uploads/1/3/1/8/131860645/pipugodek_funafudi_radekemeruxivut.pdf
    • http://albertquiambaophotography.com/uploads/1/3/0/5/130590279/lajukitalu.pdf
    • http://thepoulin.com/uploads/1/3/0/4/130436196/c5629494ee0.pdf
    • http://redesigntrinitycv.org/uploads/1/3/0/6/130639972/b92e2c29.pdf
    • http://ressel.us/uploads/1/3/1/4/131453867/webijoji.pdf
    • http://brianhaggard.com/uploads/1/3/0/6/130640141/3138884.pdf
    • http://operation26.com/uploads/1/3/1/4/131483254/286ed.pdf
    • http://success-culture.com/uploads/1/3/0/6/130622002/zawep-saxufekatubela.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_off00008a74.bin
cc82d9b71fa37c2221be38022fcb7bd7829fb5d5dba263372cc23bc6a723ee44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A74 11144 bytes

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