Malicious PDF — malware analysis report

Static analysis result for SHA-256 969a8384cafe8777…

MALICIOUS

PDF

34.1 KB Created: 2020-09-01 11:15:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3aef442dc7d53de641c3ac99e38a3eb4 SHA-1: 60c29bc7db2a624dcb2e689712760c4e0899e558 SHA-256: 969a8384cafe87774ad8d8a41daf117556ef9e7627c49fd2d89d79e8d4d6d14b
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One of these links, https://ttraff.ru/wix?keyword=catalogue+formations+arvalis, is flagged as malicious. The document body contains garbled text but also includes the same malicious URL and a benign Shopify URL, suggesting a lure or redirection mechanism. No scripts were extracted, but the heuristic firings strongly indicate a malicious redirection or SEO spamming attempt.

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/wix?keyword=catalogue+formations+arvalis
    • https://cdn.shopify.com/s/files/1/0437/8374/9783/files/bagiwinimelag.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdf
    • https://cdn.shopify.com/s/files/1/0440/9730/6776/files/12528700779.pdf
    • https://cdn.shopify.com/s/files/1/0437/7827/7527/files/menabaxevisotadenidofek.pdf
    • https://cdn.shopify.com/s/files/1/0434/0757/3149/files/putiwixot.pdf
    • https://cdn.shopify.com/s/files/1/0439/2199/7979/files/4474527687.pdf
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/47050577674.pdf
    • https://static.usrfiles.com/ugd/b8c837_35ee4f7454d942fb811e6e65be8bb538.pdf
    • https://static.usrfiles.com/ugd/b0cd75_a14757e605104658b83febec0fa0d2b5.pdf
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/buprenorfina_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/lobalewojirogenejavi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/3890398560.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/89480813432.pdf
    • https://cdn.shopify.com/s/files/1/0439/9942/8766/files/2019_construction_company_profile.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_off00004964.bin
4d6c7f4bd4a598688758909011259c126377e26a26f48fdd390be15dc39b28c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4964 5052 bytes
font_01_sfnt_off00005a87.bin
8bef18700872c3bc8af33416367298f5adb79068325e948e9d7bcee8ab263040		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A87 10000 bytes

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