Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbf1cf8e7823c67…

MALICIOUS

PDF

43.4 KB Created: 2020-06-17 01:17:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 420e1aa8e2a0a8b16cadbba2393d96cf SHA-1: 093f5b27f73ec0d822f449d077634aa05e0e05c5 SHA-256: afbf1cf8e7823c67068231b61ec4549afe44744e443d71959d9d5d761d4782c7
62 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, a common tactic for SEO poisoning and directing users to malicious content. The document body text, though partially corrupted, suggests a lure related to a 'Zf gearbox manual download'. The presence of a PDF URI heuristic and a PDF SEO link farm heuristic indicates the document is designed to host or link to a large number of external resources, likely for distributing malware or conducting phishing. The primary IOC is the first external URI found.

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://4wc.undesirable.us/uploads/1/3/1/3/131383266/131383266.html#zf+gearbox+manual+download
    • http://monicavaladezcreative.com/uploads/1/3/1/4/131453274/a18baf234.pdf
    • http://cpanel.sahsg.co.za/uploads/1/3/1/8/131856710/wevug.pdf
    • http://swisshandwerk.com/uploads/1/3/0/6/130621893/2810943.pdf
    • http://dreamcatcherstravel.net/uploads/1/3/0/2/130272921/8060601.pdf
    • http://hawaiieventlighting.com/uploads/1/3/1/4/131437370/lewipazogasi.pdf
    • http://autodiscover.sheimdal.com/uploads/1/3/0/6/130604024/15ec1.pdf
    • http://evaan.org/uploads/1/3/0/7/130775544/zexirumo-tetifagenunub-tebolabuvorolop.pdf
    • http://renewablescopywriter.co.uk/uploads/1/3/1/8/131856042/3518794.pdf
    • http://andrewandsons.org/uploads/1/3/1/3/131381055/5e9e00c.pdf
    • http://elizabethlangs.com/uploads/1/3/1/1/131164392/1716671.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_off00006a20.bin
a5d6ac40c8b32c7ec8ee255d9956df6e65035801dc1880f1f874006cbb55e49d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A20 5060 bytes
font_01_sfnt_off00007b4b.bin
60f5a7f9586a46dc21a5e758332b8ab6a4171f28c2ffcf12b920d6ba3d8c8c5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4B 11080 bytes

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