Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec62bcf61a2cadd…

MALICIOUS

PDF

45.1 KB Created: 2020-08-30 10:14:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b1a1a52b0e697b3eea79e159dfd6211 SHA-1: 3b76c805aebdc6988acd88e5c5d9d4193cbcc9f1 SHA-256: 9ec62bcf61a2cadde4280e0295980b80be19c40c02bbe9b00fe110521cddf79e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, a common tactic for redirecting users to malicious sites. One such link, 'https://ttraff.cc/wix?keyword=patricia+hill+collins+black+feminist+thought', is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and other benign-looking PDF links, suggesting a link farm or redirection scheme designed to obscure the ultimate destination. The presence of a malicious redirector link strongly indicates an attempt to deliver a payload or phish credentials.

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.cc/wix?keyword=patricia+hill+collins+black+feminist+thought
    • https://static.usrfiles.com/ugd/b8c837_5b978cba329c4ad791d0f43ec05f9913.pdf
    • https://static.usrfiles.com/ugd/784815_9d5ec99b457741f3b484a239eb248954.pdf
    • https://static.usrfiles.com/ugd/ea78e0_bc76c024fbb04d03add1e9177eb60af5.pdf
    • https://static.usrfiles.com/ugd/bb13a2_e56c061f6259416cbb94a886b4f0e215.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5dd5b56f6ec452c817aecb991107b83.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8458/files/benjamin_franklin_autobiography_part_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/webaziramawawimikapunozuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/3727/7855/files/gapojimez.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/passive_voice_advanced_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/98680644091.pdf
    • https://cdn.shopify.com/s/files/1/0438/7025/7320/files/kabuliwala_question_answer.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_off000072f2.bin
efa307115ec91821aad283606e22c78ef522f7b7cd52a5227531c81e1efd5d68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F2 5500 bytes
font_01_sfnt_off00008575.bin
29e1c0318b1df14ed8b42dba9c38c33508162393c7d61357ddfec245ed8b5a80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8575 9888 bytes

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