Malicious PDF — malware analysis report

Static analysis result for SHA-256 180413dd0a7864bb…

MALICIOUS

PDF

16.6 KB Created: 2019-04-30 17:56:50 +01:00 Authoring application: mPDF 5.7
MD5: c57f1a67927483344c69d0b0cc38cb49 SHA-1: 84bbc3f9af3b9b23fa69a019aa4bc91819e95604 SHA-256: 180413dd0a7864bbe613de5ce9903d5b6293810f01e4b29f495f92d0212262bf
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this document as malicious. While the specific intent of the linked PDFs is unclear, the sheer volume and the heuristic firing suggest a malicious campaign, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

Heuristics 2

  • 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 http://xiixmcuin.linkpc.net/1200203204209201205/Tanner-s-Lemming-by-John-Whitlatch.pdf
    • http://xiixmcuin.linkpc.net/8202202203203207/A-Narrative-of-the-Captivity-and-Adventures-of-John-Tanner-U-S-Interpreter-at-the-Saut-de-Ste-Marie-During-Thirty-Years-Residence-Among-the-Indians-in-the-Interior-of-North-America-by-John-Tanner.pdf
    • http://xiixmcuin.linkpc.net/6200207207204204/Angelus-Britannicus-An-Ephemeris-for-the-Year-of-Our-Redemption-1710-by-John-Tanner-by-John-Tanner.pdf
    • http://xiixmcuin.linkpc.net/3202200205200200/Whiz-Tanner-and-the-Wounded-Pigeon-Tanner-Dent-Mysteries-6-by-Fred-Rexroad.pdf
    • http://xiixmcuin.linkpc.net/1201200208209204206/Tanner-s-Twelve-Swingers-Evan-Tanner-3-by-Lawrence-Block.pdf
    • http://xiixmcuin.linkpc.net/1201200208209204203/Will-Tanner-U-S-Deputy-Marshal-Will-Tanner-1-by-William-W-Johnstone.pdf
    • http://xiixmcuin.linkpc.net/4202209206207/Ellipsis-John-Marshall-Tanner-14-by-Stephen-Greenleaf.pdf
    • http://xiixmcuin.linkpc.net/1201206208200207206/Toll-Call-John-Marshall-Tanner-6-by-Stephen-Greenleaf.pdf
    • http://xiixmcuin.linkpc.net/1201200208209204202/Two-For-Tanner-Evan-Tanner-4-by-Lawrence-Block.pdf
    • http://xiixmcuin.linkpc.net/1205205200207206/The-Weller-by-Adam-J-Whitlatch.pdf
    • http://xiixmcuin.linkpc.net/9200205208201/Mormon-Mother-An-Autobiography-by-Annie-Clark-Tanner-by-Annie-C-Tanner.pdf
    • http://xiixmcuin.linkpc.net/1201207204205200205/The-Year-Of-The-Lemming-A-Novel-by-Rob-Same.pdf
    • http://xiixmcuin.linkpc.net/1200203204209200205/The-Lemming-Condition-by-Alan-Arkin.pdf
    • http://xiixmcuin.linkpc.net/1200203205200201209/The-Flaming-Lemming-by-Matt-Szychowski.pdf
    • http://xiixmcuin.linkpc.net/1200203205200203200/Larry-The-Lemming-by-Clive-Woodall.pdf
    • http://xiixmcuin.linkpc.net/1200203205200202200/The-Lemming-Folk-by-James-Gibb-Stuart.pdf
    • http://xiixmcuin.linkpc.net/1200203205200202201/The-Lemming-Factor-by-MR-Kimbell-Richard-Vincent.pdf
    • http://xiixmcuin.linkpc.net/1201207204205200206/eddie-the-nomadic-lemming-by-Edward-Butcher.pdf
    • http://xiixmcuin.linkpc.net/1200203204209209200/Robert-and-the-Lemming-Problem-by-Barbara-Seuling.pdf
    • http://xiixmcuin.linkpc.net/1201207204205201208/The-Lemming-with-the-Locket-Uncle-Scrooge-104-by-Walt-Disney-Company.pdf

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