Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c80d274b6fc478c…

MALICIOUS

PDF

41.9 KB Created: 2020-09-06 15:57:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b90c8435408ffbb3422359ca5a1f5ac SHA-1: d60e018211c8daeaa83f91b5cfd3a3a5ceb3d31d SHA-256: 4c80d274b6fc478c280f78c4eea35b404b4df8c75fb627108ad94979789fd948
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body text, though partially corrupted, contains the URL 'https://ttraff.me/wix?keyword=art+photo+editor+free', which is flagged as malicious. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external PDF files, suggesting a broader campaign to distribute malicious 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.me/wix?keyword=art+photo+editor+free
    • https://cdn.shopify.com/s/files/1/0433/4623/1449/files/juzapivotalafokapeda.pdf
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/angry_birds_game_free_play_store.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/midalibiket.pdf
    • https://static.usrfiles.com/ugd/d7c203_ade1a324455f4911820f1b4d5b4290d1.pdf
    • https://static.usrfiles.com/ugd/8ab72e_e33b717903d94d4d8c392f4e9f354133.pdf
    • https://static.usrfiles.com/ugd/e2c250_57f395e38cc7473496196bd9d31fb75f.pdf
    • https://static.usrfiles.com/ugd/98857b_91d9c6a24e864d88b6276f03f5aa7ba1.pdf
    • https://static.usrfiles.com/ugd/b8c837_b771057b356f49c4b19b714201aeeab6.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/divakase.pdf
    • https://cdn.shopify.com/s/files/1/0437/6382/6840/files/tizovav.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6653/files/52855868932.pdf
    • https://cdn.shopify.com/s/files/1/0429/7087/4009/files/fire_breathers_training_exam_answers_fallout_76.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1254/files/managerial_accounting_garrison_14th_edition_solutions.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_off000068ea.bin
e0deae49258870d534420e9e2defe2446d746b1f09707d4a4499090ce910adb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68EA 4696 bytes
font_01_sfnt_off000078e1.bin
d2fa53e73c7f6d74495953eb77455484852a3332c9620414db537eacd261de99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E1 10092 bytes

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