Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4a91c246a45bd6c…

MALICIOUS

PDF

43.2 KB Created: 2020-08-30 17:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 514e7df865ef3e75a70bd0f3cff4ae2f SHA-1: 67fc2683e1139f85ee7dbd29a01a57607649c460 SHA-256: e4a91c246a45bd6c8a062c98eacfaff3ca1ab2c01f98fb85367c15babd3a3141
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, disguised with a search query for 'download ed sheeran album'. This indicates a social engineering tactic to trick users into clicking the link. The presence of a large number of external PDF links, many pointing to Shopify domains, suggests a link farm or redirection infrastructure. No scripts were extracted from this sample.

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=download+ed+sheeran+album
    • https://static.usrfiles.com/ugd/824332_179f37da3ff94df5858b1758e8859304.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f01ff7c3d394347bf32dd19df69c6b9.pdf
    • https://static.usrfiles.com/ugd/49be48_1223b6ae216a4a0a83ea63b81d63db53.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_3d93318d40f5463dba7d77a853904e05.pdf
    • https://static.usrfiles.com/ugd/b8c837_b141bc19f86a429baf8c81e42b40d6e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_338bf714bd0e413a9b92497faf5273bb.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_e6ecab13c638427c9b4786e432712799.pdf
    • https://cdn.shopify.com/s/files/1/0439/0469/6488/files/architectural_drafting_for_interior_designers.pdf
    • https://cdn.shopify.com/s/files/1/0438/0013/3793/files/10919543079.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/99318740895.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/18988202795.pdf
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/effects_of_tardiness_of_students.pdf
    • https://cdn.shopify.com/s/files/1/0430/8605/3527/files/24262279827.pdf
    • https://cdn.shopify.com/s/files/1/0433/7664/0156/files/sezurixogofujop.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_off00005f56.bin
324e39d09e8d489c9b475b6f4634552932f0003601e472bb54e6a0c1312f68f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F56 5296 bytes
font_01_sfnt_off00007138.bin
5a8fe16eb55f36ae078911193aae18368497c221462694ae49be377f575a73c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7138 15096 bytes

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