Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c9582f53dc59a6…

MALICIOUS

PDF

47.7 KB Created: 2020-08-30 12:09:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 935e38e875d32694cf8c840dd7416096 SHA-1: f7f3802a646e3b23be1d6fd7507eff6fdde797e6 SHA-256: f3c9582f53dc59a67d733d0cb4080f306ca62dec2520f00bc4a395a67387458f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious link, 'https://ttraff.ru/wix?keyword=mordheim+sisters+of+sigmar', is flagged as belonging to known malicious redirector infrastructure. While many other links point to benign Shopify domains, the presence of the malicious redirector and the sheer volume of links suggest a coordinated effort to either distribute malware or engage in SEO manipulation for malicious purposes.

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=mordheim+sisters+of+sigmar
    • https://cdn.shopify.com/s/files/1/0437/3636/7265/files/corpse_bride_piano_duet_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0438/9899/4856/files/95586189097.pdf
    • https://cdn.shopify.com/s/files/1/0433/3617/1688/files/wiring_simplified_download.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_cb6d813db5be4272a2939c98d7fb8dc9.pdf
    • https://static.usrfiles.com/ugd/834936_974cc4a1d07b4d3a92cb04b60b24b065.pdf
    • https://static.usrfiles.com/ugd/b8c837_14f1dd89131c460bb4c0268c1c5dedf3.pdf
    • https://static.usrfiles.com/ugd/df4650_e10ea89212d84cc9a6068d2038553dd7.pdf
    • https://static.usrfiles.com/ugd/b8c837_c73cfb7d4e44477f809a204966db6af4.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f09115c31ba43d1998f27242f01d6c4.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_off00007d89.bin
e9b5743a96beeccdeb214d41d193b6249e6927ffde3b1fd8b7b8838876e38368		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D89 5296 bytes
font_01_sfnt_off00008f6f.bin
04a45e2dea8702aef3476193a355be367ca185ffd167984bd75deb33fc59c78a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6F 10352 bytes

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