Malicious PDF — malware analysis report

Static analysis result for SHA-256 2924b55804a73a08…

MALICIOUS

PDF

33.8 KB Created: 2020-04-02 14:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7aa87a4dc11e6c872ac17547ca9131e4 SHA-1: fdb61b6b1dd860c11012718f980e11d45ab6a8ea SHA-256: 2924b55804a73a085df0f0798e1db532a603bf9633876959faf1db6a3c138203
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, many of which point to other PDFs hosted on similar domains. This pattern is indicative of a link farm or SEO manipulation tactic, likely intended to drive traffic to malicious or compromised sites. The document body itself is largely obfuscated, but the presence of the URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest a malicious intent to redirect users. No scripts were extracted from this sample.

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://verein-manas.com/uploads/1/3/1/4/131453676/131453676.html#jazz+piano+voicings+two+hands
    • http://globalphysicianservice.org/uploads/1/3/0/6/130620820/6d70cfba3e7.pdf
    • http://brilliant.domains/uploads/1/3/0/9/130969707/691a6.pdf
    • http://addley2018.com/uploads/1/3/1/0/131071111/guzokibopikukakisotu.pdf
    • http://goodstewardsofrockingham.org/uploads/1/3/1/0/131069766/pusekujolale-leketux-kotexaxagax-bawatizidesotes.pdf
    • http://magnarinfilm.org/uploads/1/3/0/5/130551558/9383939.pdf
    • http://fundraisers-aylsham.com/uploads/1/3/1/3/131379116/9324036.pdf
    • http://happiestgymonearth.com/uploads/1/3/0/4/130489371/466859.pdf
    • http://sarahfuchs.org/uploads/1/3/0/2/130291328/98ede95978e1.pdf
    • http://hr-serious.com/uploads/1/3/0/6/130604566/kukuzogal-dobis-lanofepubazo-zidirukumav.pdf
    • http://fucd.life/uploads/1/3/0/3/130323932/2000086.pdf
    • http://u-beyond.org/uploads/1/3/0/5/130588720/1714437.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_off00005d6b.bin
06a10c9003842295634fdca4a5261f91157132f41fbcbe8107946b288c24fad1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6B 7448 bytes

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