Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b55dbd97bb623be…

MALICIOUS

PDF

19.0 KB Created: 2019-04-30 02:06:26 +01:00 Authoring application: mPDF 5.7
MD5: b83c03b18577c6c29ab3deeb75f875a1 SHA-1: d11d5d7ffcdf00361e82e0a0666141694bb9582b SHA-256: 4b55dbd97bb623be14207c868e2924c5ea094ba3707cf58afe1fa6aa8feb011b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified as a link farm. While most of these URLs were classified as benign, the sheer volume and the heuristic firing of PDF_SEO_LINK_FARM suggest a malicious intent, possibly for SEO manipulation or to host further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was unreadable.

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://muicuiu.dumb1
    • http://muicuiu.dumb1.com/4a08a03a09a03a00/Lustvolle-Ergebung---Shadows-of-Love-by-Lilly-Gr-nberg.pdf
    • http://muicuiu.dumb1.com/8a07a05a08a02a09/Bonhoeffer---Widerstand-und-Ergebung-by-Mario-Hartmann.pdf
    • http://muicuiu.dumb1.com/1a01a09a05a03a09a08/Dear-Lilly-From-Father-to-Daughter-The-Truth-about-Life-Love-and-the-World-We-Live-in-by-Peter-Greyson.pdf
    • http://muicuiu.dumb1.com/9a00a03a01a05a06/Lustvolle-Begierden-Sex-Geschichten-by-Benno-Jund.pdf
    • http://muicuiu.dumb1.com/1a01a01a00a09a00a04/Lustvolle-Tr-ume-Erotisches-Bettgefl-ster-by-Vera-V-.pdf
    • http://muicuiu.dumb1.com/4a01a08a02a01a08/Unlocking-Shadows-Keys-to-Love-4-by-Kennedy-Layne.pdf
    • http://muicuiu.dumb1.com/1a00a07a06a08a05a07/Gefesselte-Lust---Shadows-of-Love-by-Jasmin-Eden.pdf
    • http://muicuiu.dumb1.com/9a03a02a01a03a03/Verbotener-Tanz---Shadows-of-Love-by-July-Cullen.pdf
    • http://muicuiu.dumb1.com/1a01a01a08a03a03a08/K-ste-der-Versuchung---Shadows-of-Love-by-Lara-Hill.pdf
    • http://muicuiu.dumb1.com/1a00a09a02a06a00a06/Die-uners-ttliche-Herzogin-Lustvolle-MILF-Rollenspiele-by-Pal-Pagan.pdf
    • http://muicuiu.dumb1.com/7a05a09a09a07a04/Love-Amidst-Shadows-A-Mother-for-Sabrina-by-Carl-Turner.pdf
    • http://muicuiu.dumb1.com/8a08a07a06a06a00/Reife-Fr-chte-h-ngen-tief-Lustvolle-MILF-Geschichten-by-Pal-Pagan.pdf
    • http://muicuiu.dumb1.com/9a06a08a09a08a06/Erotik-Verwirrungen-Lust-und-Phantasien-1-Erotischer-Romane-erotische-amp-lustvolle-by-Unknown.pdf
    • http://muicuiu.dumb1.com/4a05a06a08a09a01/Reno-and-Trina-In-the-Shadows-of-Love-Romancing-The-Mob-Boss-Series-Book-12-by-Mallory-Monroe.pdf
    • http://muicuiu.dumb1.com/2a05a02a01a01a09/People-Who-Eat-Darkness-Love-Grief-and-a-Journey-into-Japan-s-Shadows-by-Richard-Lloyd-Parry.pdf
    • http://muicuiu.dumb1.com/1a02a07a09a07a05/Stealing-Shadows-Bishop-Special-Crimes-Unit-1-Shadows-1-by-Kay-Hooper.pdf
    • http://muicuiu.dumb1.com/4a08a05a05a09/Out-of-the-Shadows-Bishop-Special-Crimes-Unit-3-Shadows-3-by-Kay-Hooper.pdf
    • http://muicuiu.dumb1.com/3a00a03a04a03a02/Secrets-in-the-Shadows-Shadows-Collection-Leroy-s-Sins-1-by-T-L-Haddix.pdf
    • http://muicuiu.dumb1.com/2a04a03a07a05a00/Tracking-Shadows-Shadows-of-Justice-4-by-Regan-Black.pdf
    • http://muicuiu.dumb1.com/5a02a07a08a04a06/Shadows-The-Depiction-of-Cast-Shadows-in-Western-Art-by-E-H-Gombrich.pdf

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