Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0b74cd62eadebf…

MALICIOUS

PDF

57.4 KB Created: 2020-08-11 14:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a1010baab7ce11319da8be601913057 SHA-1: b2ff7a176f17f533f4dd764c02698feea8b023de SHA-256: db0b74cd62eadebfc7f39c7b5eafc9d64a4b7642eed9cd94a952161110346c4d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links, with one critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=infectious+canine+hepatitis+pdf', which is likely intended to lure the user into clicking and potentially downloading further malicious content. The presence of multiple Shopify URLs suggests an attempt to blend in with legitimate content while hosting the malicious redirector.

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=infectious+canine+hepatitis+pdf
    • http://files.lebanontrailptsa.com/uploads/1/3/1/8/131856815/fevibakujoreja-nunena.pdf
    • http://files.marplewineclub.com/uploads/1/3/1/3/131384127/benijukebodow-vasenopidafupak.pdf
    • http://files.peaceofmindcolorado.com/uploads/1/3/1/8/131871424/1795389.pdf
    • http://files.lizhardleyimages.com/uploads/1/3/1/4/131406337/3768440.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0433/9462/9788/files/97316017445.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/gobaxinurim.pdf
    • https://cdn.shopify.com/s/files/1/0430/5377/7047/files/methods_of_argumentation.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6143/files/96749566500.pdf
    • https://cdn.shopify.com/s/files/1/0439/5253/7758/files/36036173125.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0037/files/75354380399.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/54254048149.pdf
    • https://cdn.shopify.com/s/files/1/0440/1777/8838/files/62870864173.pdf
    • https://cdn.shopify.com/s/files/1/0437/2765/0970/files/barejemijab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/33737717205.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/39482061975.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_off0000a4a3.bin
b63978246a6593fc1fbc0e1708fd217d5656ee5078e13677251bff8a8d4e9185		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4A3 5052 bytes
font_01_sfnt_off0000b5d0.bin
84191325df69d02f29d5c14b766b56a2674497f140cf1be25d6a934f00dc77ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5D0 10136 bytes

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