Malicious PDF — malware analysis report

Static analysis result for SHA-256 6555bc1f3119e583…

MALICIOUS

PDF

14.8 KB Created: 2019-05-02 18:20:41 +01:00 Authoring application: mPDF 5.7
MD5: 6eaaeae69d41c2edfd4ebf626e07767b SHA-1: c4462274bb5d1a799008368fc8708d97c5ac66a9 SHA-256: 6555bc1f3119e583ff7c66d218235c504d67325099fc42d58c2fe1534dd27963
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute further malicious content. While the ML classifier flagged this as malicious, the specific intent beyond link farming is unclear due to the lack of executable scripts. The primary attack pattern observed is the distribution of numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/1203201202208204/Strump-A-World-of-Shadows-by-Michael-Alexander-Beas.pdf
    • http://xiixmcuin.linkpc.net/2202200204209207/Vol-jin-Shadows-of-the-Horde-World-of-Warcraft-12-by-Michael-A-Stackpole.pdf
    • http://xiixmcuin.linkpc.net/3209201204207208/Rising-Shadows-World-in-Shadows-1-by-Bridget-Blackwood.pdf
    • http://xiixmcuin.linkpc.net/3209204205202203/Where-the-Shadows-Lie-Fire-amp-Ice-1-by-Michael-Ridpath.pdf
    • http://xiixmcuin.linkpc.net/4206201207200203/Amid-the-Shadows-by-Michael-C-Grumley.pdf
    • http://xiixmcuin.linkpc.net/1201209201205205/The-City-of-Shadows-Stefan-Gillespie-1-by-Michael-Russell.pdf
    • http://xiixmcuin.linkpc.net/6202208209205203/Book-of-Shadows-Volume-One-Casting-by-Michael-Beaulieu.pdf
    • http://xiixmcuin.linkpc.net/3205205205201/Cinema-of-Shadows-Harmony-Indiana-2-by-Michael-West.pdf
    • http://xiixmcuin.linkpc.net/1201209205205203205/Shadows-of-a-Fallen-World-Fallen-World-2-by-Micki-Magee.pdf
    • http://xiixmcuin.linkpc.net/9207202205205205/From-Alexander-to-Cleopatra-by-Michael-Grant.pdf
    • http://xiixmcuin.linkpc.net/1202206204208209/Escaping-Shadows-Shadow-World-2-by-Julieanne-Lynch.pdf
    • http://xiixmcuin.linkpc.net/4208203200208/Queen-of-Shadows-Shadow-World-1-by-Dianne-Sylvan.pdf
    • http://xiixmcuin.linkpc.net/4204208208209209/The-Shadows-of-Creation-Dark-Matter-and-the-Structure-of-the-Universe-by-Michael-Riordan.pdf
    • http://xiixmcuin.linkpc.net/4207205204201209/Confessions-of-a-Male-Nurse-by-Michael-Alexander.pdf
    • http://xiixmcuin.linkpc.net/1200206208201206204/The-World-According-to-Philip-K-Dick-by-Alexander-Dunst.pdf
    • http://xiixmcuin.linkpc.net/1208205200204205/Alexander-the-Salamander-World-Adventurers-for-Kids-1-by-M-G-Edwards.pdf
    • http://xiixmcuin.linkpc.net/2208205201208205/Nowhere-Like-Home-Misadventures-in-a-Changing-World-by-Jamie-Alexander.pdf
    • http://xiixmcuin.linkpc.net/1208206208208209/La-s-Orchestra-Saves-the-World-by-Alexander-McCall-Smith.pdf
    • http://xiixmcuin.linkpc.net/1200206208200208205/The-World-According-to-Philip-K-Dick-Future-Matters-by-Alexander-Dunst.pdf
    • http://xiixmcuin.linkpc.net/9203200201208204/Into-the-Arena-The-World-of-the-Spanish-Bullfight-by-Alexander-Fiske-Harrison.pdf

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