Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc278172a81c2d92…

MALICIOUS

PDF

15.5 KB Created: 2019-04-30 03:26:50 +01:00 Authoring application: mPDF 5.7
MD5: b86d7068e17f031f395a0e72391ac408 SHA-1: a5661dee1910deedce904048e65955ac4619280d SHA-256: cc278172a81c2d92447db84d086fda7b8e104b33c4bd08835e59af4281daefd0
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this document as malicious. While the specific intent beyond linking is unclear due to the lack of executable scripts, the primary attack pattern involves directing users to a suspicious domain hosting numerous files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/3200200208200201/Wondrous-Strange-Wondrous-Strange-1-by-Lesley-Livingston.pdf
    • http://xiixmcuin.linkpc.net/2208205208204209/Darklight-Wondrous-Strange-2-by-Lesley-Livingston.pdf
    • http://xiixmcuin.linkpc.net/3207206201204/Darklight-Wondrous-Strange-2-by-Lesley-Livingston.pdf
    • http://xiixmcuin.linkpc.net/2209204205204207/The-Wondrous-and-the-Wicked-by-Page-Morgan.pdf
    • http://xiixmcuin.linkpc.net/6205201200200200/The-Brief-Wondrous-Life-of-Oscar-Wao-by-Junot-D-az.pdf
    • http://xiixmcuin.linkpc.net/2201202203202/The-Brief-Wondrous-Life-of-Oscar-Wao-by-Junot-D-az.pdf
    • http://xiixmcuin.linkpc.net/3205204203204206/The-Brief-Wondrous-Life-of-Oscar-Wao-by-Junot-D-az.pdf
    • http://xiixmcuin.linkpc.net/6208203200204/This-Broken-Wondrous-World-Man-Made-Boy-2-by-Jon-Skovron.pdf
    • http://xiixmcuin.linkpc.net/1204202204209202/The-Brief-Wondrous-Life-of-Oscar-Wao-by-Junot-D-az.pdf
    • http://xiixmcuin.linkpc.net/1200206200209208203/The-Gift-of-the-Wondrous-Fig-Tree-by-Magda-Szab-.pdf
    • http://xiixmcuin.linkpc.net/2209208200205202/The-Brief-Wondrous-Life-of-Oscar-Wao-by-Junot-D-az.pdf
    • http://xiixmcuin.linkpc.net/9203208207203201/Martina-and-the-Wondrous-Waterfall-by-Yadhira-Gonzalez-Taylor.pdf
    • http://xiixmcuin.linkpc.net/6204207200209/Emily-s-Secret-Book-of-Strange-Emily-the-Strange-Graphic-Novels-2-by-Rob-Reger.pdf
    • http://xiixmcuin.linkpc.net/2209204206206208/Spells-of-Enchantment-The-Wondrous-Fairy-Tales-of-Western-Culture-by-Jack-D-Zipes.pdf
    • http://xiixmcuin.linkpc.net/8207200206200204/Spells-of-Enchantment-The-Wondrous-Fairy-Tales-of-Western-Culture-by-Jack-D-Zipes.pdf
    • http://xiixmcuin.linkpc.net/1202204204205207/Emily-the-Strange-The-Lost-Days-Emily-the-Strange-Novels-1-by-Rob-Reger.pdf
    • http://xiixmcuin.linkpc.net/1200206207200204/Strange-Luck-Strange-Luck-Series-1-by-Amie-Irene-Winters.pdf
    • http://xiixmcuin.linkpc.net/6203206204205206/Damosel-In-Which-the-Lady-of-the-Lake-Renders-a-Frank-and-Often-Startling-Account-of-her-Wondrous-Life-and-Times-by-Stephanie-Spinner.pdf
    • http://xiixmcuin.linkpc.net/4200205209207201/The-Valiant-by-Lesley-Livingston.pdf
    • http://xiixmcuin.linkpc.net/7203203209/The-Defiant-The-Valiant-2-by-Lesley-Livingston.pdf
    • http://xiixmcuin.linkpc.net/6204207200209/Emily-s-Secret-Book-of-Strange-Emily-th

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