Malicious PDF — malware analysis report

Static analysis result for SHA-256 9961625f6b8721e5…

MALICIOUS

PDF

33.1 KB Created: 2020-08-11 07:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c055bed7965e4026c93ea700229e599 SHA-1: 0b2a9153b9afd8f803023f4b294c3d68047711de SHA-256: 9961625f6b8721e503e67f6a980b1e912aa6f910a185713b7292f1289b66bc05
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at https://ttraff.ru/pify?keyword=osbourne+game+theory+pdf. This indicates a likely attempt to redirect the user to malicious content under the guise of providing a PDF document. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.ru/pify?keyword=osbourne+game+theory+pdf
    • http://files.davidwentworthart.com/uploads/1/3/0/7/130775427/bibadi_sodafitewe_sagifavapitevup.pdf
    • http://files.pof-addcallsettings.com/uploads/1/3/0/8/130814229/janatuxononunolexek.pdf
    • http://files.burrisdevanney.com/uploads/1/3/1/1/131164556/4124640.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/amharic_islamic_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/5960/9753/files/defizunidifev.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/arch_linux_viewer.pdf
    • https://cdn.shopify.com/s/files/1/0432/7777/9100/files/torusofokigilenenor.pdf
    • https://cdn.shopify.com/s/files/1/0437/7768/7701/files/kugevamenajamudifine.pdf
    • https://cdn.shopify.com/s/files/1/0431/0584/5397/files/63855922363.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53981477141.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niriliruvurufuwupaku.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/kazenomase.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/bijomajaboxirifolani.pdf
    • https://cdn.shopify.com/s/files/1/0430/4335/6821/files/tasixodul.pdf
    • https://cdn.shopify.com/s/files/1/0432/4897/6032/files/97465117844.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_off00004323.bin
17bc7af040e86472c2f387e1c11e04f359912e269131ffb9c65b661674a1a611		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4323 5692 bytes
font_01_sfnt_off0000565d.bin
e4b66e9a5466715deb533b125490f783fcfa9b7ab12f3a23dc475ebabb6cf6cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x565D 9756 bytes

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