Malicious PDF — malware analysis report

Static analysis result for SHA-256 374efb390c582714…

MALICIOUS

PDF

18.6 KB Created: 2019-05-02 17:43:14 +01:00 Authoring application: mPDF 5.7
MD5: d58be75be2c85537e157a80e011d3243 SHA-1: 15b4b5170f206e903106b4bfaf4454a865c74b31 SHA-256: 374efb390c58271485e773b91797354ac88995c636f14d96c0256f030f476a5d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF 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 strongly indicated maliciousness. While the specific intent of the linked PDFs is unclear, the sheer volume and the heuristic firing suggest a malicious link farm designed to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/7201200208205209/Lightning-Strike-The-Secret-Mission-to-Kill-Admiral-Yamamoto-and-Avenge-Pearl-Harbor-by-Donald-A-Davis.pdf
    • http://xiixmcuin.linkpc.net/9200203200206206/Final-Secret-of-Pearl-Harbor-by-Robert-A-Theobald.pdf
    • http://xiixmcuin.linkpc.net/8207206202208205/The-Flying-Tigers-The-Untold-Story-of-the-American-Pilots-Who-Waged-a-Secret-War-Against-Japan-Before-Pearl-Harbor-by-Samuel-Kleiner.pdf
    • http://xiixmcuin.linkpc.net/1200208201209205205/Interlude-in-Pearl-Pearl-2-5-by-Emily-Ryan-Davis.pdf
    • http://xiixmcuin.linkpc.net/7201200207201202/Get-Yamamoto-by-Burke-Davis.pdf
    • http://xiixmcuin.linkpc.net/4203206206202204/Tongue-of-War-From-Pearl-Harbor-to-Nagasaki-by-Tony-Barnstone.pdf
    • http://xiixmcuin.linkpc.net/2205208200204209/Infamy-Pearl-Harbor-and-its-Aftermath-by-John-Toland.pdf
    • http://xiixmcuin.linkpc.net/3203205206201203/Pearl-Harbor-FDR-Leads-the-Nation-Into-War-by-Steven-M-Gillon.pdf
    • http://xiixmcuin.linkpc.net/4205208200205200/Janey-G-Blue-Pearl-Harbor-1941-by-Kathleen-Duey.pdf
    • http://xiixmcuin.linkpc.net/9209201202201200/The-Bombing-of-Pearl-Harbor-1941-I-Survived-4-by-Lauren-Tarshis.pdf
    • http://xiixmcuin.linkpc.net/5209203203209205/The-Pacific-War-Companion-From-Pearl-Harbor-to-Hiroshima-by-Daniel-Marston.pdf
    • http://xiixmcuin.linkpc.net/8201201204206/Lightning-Bug-by-Donald-Harington.pdf
    • http://xiixmcuin.linkpc.net/7208206204200209/The-Desperate-Diplomat-Saburo-Kurusu-s-Memoir-of-the-Weeks-before-Pearl-Harbor-by-J-Garry-Clifford.pdf
    • http://xiixmcuin.linkpc.net/3205201200200200/Pearl-Harbor-Date-of-Infamy-Date-to-Remember-by-Jon-J-Cardwell.pdf
    • http://xiixmcuin.linkpc.net/7206205206207204/SEAL-Target-Geronimo-The-Inside-Story-of-the-Mission-to-Kill-Osama-bin-Laden-by-Chuck-Pfarrer.pdf
    • http://xiixmcuin.linkpc.net/7208207204206208/Mission-Impawsible-Paws-and-Claws-Mystery-4-by-Krista-Davis.pdf
    • http://xiixmcuin.linkpc.net/2207209204203201/Children-Who-Kill-Profiles-of-Pre-Teen-and-Teenage-Killers-by-Carol-Anne-Davis.pdf
    • http://xiixmcuin.linkpc.net/2209203205205206/Major-BS-A-Top-Secret-Mission-by-John-Martin.pdf
    • http://xiixmcuin.linkpc.net/8206203201206207/Secret-Mission-Einsatz-in-New-York-by-Michael-Wallner.pdf
    • http://xiixmcuin.linkpc.net/2207208208206200/From-a-Drood-to-a-Kill-Secret-Histories-9-by-Simon-R-Green.pdf
    • http://xiixmcuin.linkpc.net/3203205206201203/Pearl-Harbor-FDR-Leads-the-Nation-Into-War-by-Steven-M-Gill

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