Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c61825af65d36c8…

MALICIOUS

PDF

38.1 KB Created: 2020-05-22 19:08:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6458c31ce0eeeb67f2dcef850f03727d SHA-1: 268856fcf8839f5ba463c0e6a11bdadcc659b3d9 SHA-256: 1c61825af65d36c829802802dbe252dd31d04edc703121a54238aa3b2ef096be
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a method to distribute malicious content across multiple sites. The document body is heavily obfuscated and contains some of the same URLs, reinforcing the idea that the primary function is to redirect users to these external resources.

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://reviewscover2cover.com/uploads/1/3/1/6/131606727/131606727.html#wisc+iv+manual
    • http://masteringmagic.net/uploads/1/3/0/8/130813398/252ef8873d055.pdf
    • http://socialscientificbeekeeping.com/uploads/1/3/1/4/131483465/bisejoguvuf.pdf
    • http://counterpointservices.org/uploads/1/3/0/6/130603828/favebukaj-zumamolid-pivokofefo.pdf
    • http://michellehepburn.org/uploads/1/3/1/4/131453574/velefirikugi.pdf
    • http://travelisplay.com/uploads/1/3/0/5/130588571/xavenad_peluf_rinaxuso.pdf
    • http://kragero-montessori.no/uploads/1/3/0/2/130291579/eab0dd.pdf
    • http://502-events.com/uploads/1/3/1/4/131406621/ee7634d2.pdf
    • http://mosaicguides.com/uploads/1/3/0/8/130874431/da235ce687ce3e4.pdf
    • http://westcoastweedwitch.com/uploads/1/3/1/3/131379591/6349196.pdf
    • http://surreycreepcatcher.com/uploads/1/3/0/5/130550713/zirita_kenasutag_xipununibekem_mozek.pdf
    • https://doi.org/10.1007/978-0-3
    • 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_off00006792.bin
dcd1ccaaa329e03da09246d4cf1b19c813e3f0ccb0af54efd860d3db950eaff5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6792 11792 bytes

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