Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec037d27f629750…

MALICIOUS

PDF

60.1 KB Created: 2020-08-29 20:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55536d4784c6e83d608668ee09aea874 SHA-1: 1a4cace221f98e5abd788d30e8921fb0bb400d4b SHA-256: 8ec037d27f6297508382c622a4dac4121d2f7af7a306f1c88bf48f342e624824
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO poisoning or to distribute malicious content. One of the embedded URLs, 'https://ttraff.com/wix?keyword=cycle+de+la+coccinelle', is flagged as a known malicious redirector. The document body itself is heavily obfuscated and contains binary data, but the presence of this malicious URL strongly suggests an attempt to redirect users to harmful sites.

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=cycle+de+la+coccinelle
    • https://cdn.shopify.com/s/files/1/0431/4827/9970/files/44757213990.pdf
    • https://cdn.shopify.com/s/files/1/0433/5524/2655/files/rizegapodapijak.pdf
    • https://cdn.shopify.com/s/files/1/0450/2552/5910/files/kaabil_movie_480p.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/professional_nursing_practice_concepts_and_perspectives.pdf
    • https://static.usrfiles.com/ugd/b8c837_10c490bdd8774643ac54b12024c3efec.pdf
    • https://static.usrfiles.com/ugd/b8c837_47e4f217def14a49a6bad2a3b6129161.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad9b7eca1d5d4f16910e91a2682076e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_acc9996442cf4f24886946e74f2cdc9d.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ad4e55b4ba84abeaf4b87e3f3fd2a3d.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2225f8f139b47cc85f535f7f1e173db.pdf
    • https://static.usrfiles.com/ugd/b8c837_f20fde12943f47099338d386a33b78d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba45116f14384ce89cac51a554b99c6a.pdf
    • https://static.usrfiles.com/ugd/b8c837_33ed2aa250824ee2b529c83309b153c1.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_off0000a050.bin
4f603b6eb4e1bff09a8d1f00e3c28b6e6c5766b12f01db85e5add72a1baa2e1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA050 4668 bytes
font_01_sfnt_off0000b03f.bin
c95b074d463054de4d4f75b767f2cac7c795b667b31458dc02f9b289983cbd8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB03F 17112 bytes

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