Malicious PDF — malware analysis report

Static analysis result for SHA-256 994466cf647a34be…

MALICIOUS

PDF

40.1 KB Created: 2020-08-29 23:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75af920b544b2f76ad773bc700da84ce SHA-1: c272379eba65d7c60b0b80201dd4f430193721a2 SHA-256: 994466cf647a34be843016ec473d8de5ecdc75dfbcfa99a0cb7c1fef7c8043ba
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, with a critical heuristic firing indicating a PDF link farm. One of these links, 'https://ttraff.cc/wix?keyword=the+color+of+family+ties', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL and other links to external PDFs, suggesting a coordinated effort to direct users to potentially harmful 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.cc/wix?keyword=the+color+of+family+ties
    • https://static.usrfiles.com/ugd/b8c837_beae7e68c9d34032ac0c56de8b4b6aed.pdf
    • https://static.usrfiles.com/ugd/b8c837_313294f36f494534b0edf1813c446110.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbd68313aa79451b801647f1eb970551.pdf
    • https://static.usrfiles.com/ugd/7d21c0_8c93ce1317a64416a508ee529158ae96.pdf
    • https://static.usrfiles.com/ugd/b8c837_68deb2993345474ea8b91d98a72facf5.pdf
    • https://static.usrfiles.com/ugd/b8c837_5cd4cb3a00ee47cca8d3479074a167e3.pdf
    • https://static.usrfiles.com/ugd/93c935_d1050be6621b4ec9b5977d4af29b3e3a.pdf
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/7423840458.pdf
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/deep_fitted_sheets_king_size_next.pdf
    • https://cdn.shopify.com/s/files/1/0429/8086/8255/files/disclaimer_clause_in_audit_report.pdf
    • https://cdn.shopify.com/s/files/1/0440/9176/8984/files/beyond_the_quartic_equation.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/8115870609.pdf
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/tozukokisirap.pdf
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/74163154124.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_off000060df.bin
e0118dc6b7174e7b0d8734ba4cc075e5851a05d049f911b9a68f6c4bb3cc70d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DF 5172 bytes
font_01_sfnt_off00007253.bin
1aecb90aa397dcc32231d9ce9356ac186fcb9cd6c8f568bded724b872e73a165		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7253 9816 bytes

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