Malicious PDF — malware analysis report

Static analysis result for SHA-256 c89ee6f79ef0165d…

MALICIOUS

PDF

45.4 KB Created: 2020-08-31 12:38:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83ff1103c71e992f3ccfffb0759d2895 SHA-1: cb1e871e3b014dbc627e26630c1f69f3522b52c5 SHA-256: c89ee6f79ef0165d1115d31016eef1ed5695763c494bf2f8603a09d0731b4cb0
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 URLs, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious URL, 'https://ttraff.com/wix?keyword=strongest+star+wars+characters', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and other PDF links, reinforcing the attack pattern of directing users to potentially harmful external content.

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.com/wix?keyword=strongest+star+wars+characters
    • https://static.usrfiles.com/ugd/008e52_1da5174f60b947bfacddfb2601631ffe.pdf
    • https://static.usrfiles.com/ugd/b8c837_70e854ce6a3d4db89aedaaf136a267a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f8215a9ea514b359c48464451532b64.pdf
    • https://static.usrfiles.com/ugd/0d089b_a6eae0ef9f9043578531e2ff22e32d48.pdf
    • https://cdn.shopify.com/s/files/1/0434/5200/6552/files/73500623431.pdf
    • https://cdn.shopify.com/s/files/1/0440/6244/1637/files/cristiano_ronaldo_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0447/8582/7991/files/batman_hush_comic_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0431/3881/0023/files/33751172692.pdf
    • https://static.usrfiles.com/ugd/45fd81_6950a04b37204930a19d7c885907ab28.pdf
    • https://static.usrfiles.com/ugd/a467d2_1c10c0a6208646bf9a4e8e8a65892a0c.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ccc27ae87d3470b8452156fc45d0996.pdf
    • https://static.usrfiles.com/ugd/5be868_fda4f89580524f67b1f012e730b3951d.pdf
    • https://static.usrfiles.com/ugd/857e61_464cf41a968245ceae06dc277b5f7c89.pdf
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/53972619945.pdf
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/camp_fire_date.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_off0000739d.bin
b280ebe5896229e15cfedd2e2c2fdef55b382438b5d8d34eb989e307605aa988		 pdf-font-stream PDF embedded font (sfnt) at offset 0x739D 5224 bytes
font_01_sfnt_off00008572.bin
087e1238cb5406d218e6f15a6098a799f82edeb4124e4ea5a4c9273184b2e60c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8572 10400 bytes

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