Malicious PDF — malware analysis report

Static analysis result for SHA-256 58a04c164d4b72ea…

MALICIOUS

PDF

38.0 KB Created: 2020-04-01 17:25:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: afedd974b4f0f1c6fd76fbcc403ee463 SHA-1: e872c09211137da77f7c117254680d4f31d87156 SHA-256: 58a04c164d4b72eaf4670807b777e10a627130f53f038340bca4cbdd120c6ef8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of external links, many of which point to PDF files on unrelated domains. This pattern is indicative of a link farm or SEO manipulation tactic, potentially used to distribute malicious content or improve search engine ranking for harmful sites. The ML classifier strongly supports the malicious nature of this PDF.

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://thegapfestival.com/uploads/1/3/0/3/130379210/130379210.html#amc+movie+theaters+fort+collins+co
    • http://sarah-eb.com/uploads/1/3/0/5/130543285/629a41.pdf
    • http://turnergillfootballcamp.com/uploads/1/3/0/4/130483519/zakederariri.pdf
    • http://a1dreamhomeconstruction.net/uploads/1/3/1/4/131407036/jikabevuki_robipinunokeje_jebuderogosan_jemaperujisako.pdf
    • http://volumebuzz.com/uploads/1/3/1/0/131070364/buturudana-sijosibifube.pdf
    • http://darikalorello.com/uploads/1/3/0/8/130814174/nadabewodu.pdf
    • http://nataliadgrafica.com/uploads/1/3/0/4/130490928/jowagazagoditoxo.pdf
    • http://stryker-rejuvenate-hip-recall-attorney.com/uploads/1/3/1/0/131071196/1934619.pdf
    • http://krushyaad.net/uploads/1/3/0/2/130287973/joliwawuvuso.pdf
    • http://ecosolarandwind.com/uploads/1/3/0/7/130776775/jopol_wowutewisik.pdf
    • http://lubomirskiconsulting.com/uploads/1/3/0/6/130604610/gugutumugodira-gedosidodi-wazepove.pdf
    • http://simplyspeak.net/uploads/1/3/0/5/130589399/5807889.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055a2.bin
27803afb6dfcfdec963a8c5e61489b9b70fa896cc943901b239d080e5edb7b62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55A2 7852 bytes
font_01_sfnt_off00007428.bin
67cd3670ae6e342190c318dfdfd494d386a674b289d6b9f0c2dec60068b7ac9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7428 16100 bytes

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