Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce59e53660b75481…

MALICIOUS

PDF

26.5 KB Created: 2020-04-29 16:16:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 82f054eb2aaf79025471095dec080764 SHA-1: 18d0bf1d5cdd77f666e6629be2ad7e461b602757 SHA-256: ce59e53660b754816effbb803f28f4659b46e4928d9caaf6bb147b4aac37bc67
62 Risk Score

Malware Insights

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

The PDF contains a large number of external links to various domains, many of which appear to be part of a link farm designed for SEO manipulation. The primary heuristic indicates a PDF_SEO_LINK_FARM, suggesting the document's purpose is to host these links. The embedded URLs point to PDF files on these domains, likely serving as a lure or redirect mechanism. No scripts were extracted, and the document body is heavily corrupted, making it difficult to ascertain the exact lure.

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://solengenharia.net/uploads/1/3/1/3/131381612/131381612.html#livestock+judging+fundamentals+worksheet+and+answer+key
    • http://luvthematicsss.com/uploads/1/3/0/8/130813800/jikolifuniwosorokef.pdf
    • http://kosmokayla.com/uploads/1/3/0/9/130969170/vofuvulepirimixemin.pdf
    • http://easlinstitute.org/uploads/1/3/1/0/131070330/f50178ee.pdf
    • http://civlsocial.com/uploads/1/3/0/7/130738607/dopazufofuw.pdf
    • http://blessingsbling.vip/uploads/1/3/0/5/130551981/kepewex.pdf
    • http://gatheringforgrace.com/uploads/1/3/0/6/130639664/166355.pdf
    • http://jpanow.com/uploads/1/3/0/4/130476119/910872f9de3.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_off0000423b.bin
e0f04193a28c9acade03834111d45049dd40c39b63c85c24390d5e2402114fdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x423B 7164 bytes

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