Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed266f4f750c13b…

MALICIOUS

PDF

25.8 KB Created: 2019-05-07 04:40:59 +01:00 Authoring application: mPDF 5.7
MD5: 5ad5f982424ef3943342a916c077e088 SHA-1: 263a06b1d5fac5b7d52df92d1b138726703b2419 SHA-256: bed266f4f750c13ba66f28a6f4964c7a2b3c570963d1c6986894791897d21a5e
90 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded external links, a technique often used for SEO poisoning or distributing further malicious content. While the specific URLs extracted were labeled as benign, the sheer volume and the heuristic firing indicate a malicious intent to leverage these links for an unknown purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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.com/2a07a09a07a01a02/Under-a-Dark-Sky-by-Lori-Rader-Day.pdf
    • http://muicuiu.dumb1.com/2a08a06a01a06a03/Little-Pretty-Things-by-Lori-Rader-Day.pdf
    • http://muicuiu.dumb1.com/2a06a08a02a04/The-Black-Hour-by-Lori-Rader-Day.pdf
    • http://muicuiu.dumb1.com/2a07a04a09a07a09/The-Black-Hour-by-Lori-Rader-Day.pdf
    • http://muicuiu.dumb1.com/1a03a04a04/Little-Pretty-Things-by-Lori-Rader-Day.pdf
    • http://muicuiu.dumb1.com/2a02a08a03a08/Letters-Between-Us-by-Linda-Rader-Overman.pdf
    • http://muicuiu.dumb1.com/3a09a02a09a01a07/Studio-Stories-Illuminating-Our-Lives-through-Art-by-Lauren-Rader.pdf
    • http://muicuiu.dumb1.com/1a01a08a05a00a07/Back-Kicks-And-Broken-Promises-by-Juan-Rader-Bas.pdf
    • http://muicuiu.dumb1.com/1a06a02a08a09a00/Western-genre-Novels-including-The-Dark-Tower-Ii-The-Drawing-Of-The-Three-The-Dark-Tower-The-Gunslinger-The-Dark-Tower-Iv-Wizard-And-Glass-The-Dark-Tower-Iii-The-Waste-Lands-The-Dark-Tower-V-Wolves-Of-The-Calla-The-Wind-Through-The-Keyhole-by-Hephaestus-Books.pdf
    • http://muicuiu.dumb1.com/9a05a04a04a05a05/Playing-to-the-Gods-Sarah-Bernhardt-Eleonora-Duse-and-the-Rivalry-that-Changed-Acting-Forever-by-Peter-Rader.pdf
    • http://muicuiu.dumb1.com/5a09a06a02a09/The-Immortals-After-Dark-Collection-Dreams-Of-A-Dark-Warrior-Demon-From-The-Dark-A-Hunger-Like-No-Other-Immortals-After-Dark-2-10-11-by-Kresley-Cole.pdf
    • http://muicuiu.dumb1.com/3a07a09a08a05a07/Dragon-King-Dark-Kings-6-5-Dark-World-20-5-1001-Dark-Nights-24-by-Donna-Grant.pdf
    • http://muicuiu.dumb1.com/2a00a02a00a09a07/Bad-Boys-After-Dark-Carson-Bad-Boys-After-Dark-3-Billionaires-After-Dark-7-Love-in-Bloom-49-by-Melissa-Foster.pdf
    • http://muicuiu.dumb1.com/9a04a02a02a02/Acheron-Dark-Hunter-8-Entire-Dark-Hunterverse-15-Dark-Hunterverse-23-by-Sherrilyn-Kenyon.pdf
    • http://muicuiu.dumb1.com/3a03a01a02a06a04/Bad-Boys-After-Dark-Mick-Bad-Boys-After-Dark-1-After-Dark-5-Love-in-Bloom-47-by-Melissa-Foster.pdf
    • http://muicuiu.dumb1.com/2a00a02a06a01a04/Wild-Boys-After-Dark-Jackson-Wild-Boys-After-Dark-3-Billionaires-After-Dark-3-Love-in-Bloom-45-by-Melissa-Foster.pdf
    • http://muicuiu.dumb1.com/2a00a02a00a04a01/Wild-Boys-After-Dark-Jackson-Wild-Boys-After-Dark-3-Billionaires-After-Dark-3-Love-in-Bloom-45-by-Melissa-Foster.pdf
    • http://muicuiu.dumb1.com/2a00a02a00a02a08/Wild-Boys-After-Dark-Logan-Wild-Boys-After-Dark-1-Billionaires-After-Dark-1-Love-in-Bloom-43-by-Melissa-Foster.pdf
    • http://muicuiu.dumb1.com/8a05a01a02a01a09/Full-Dark-No-Stars-Archival-Glow-In-The-Dark-Slipcased-Set-by-Stephen-King.pdf
    • http://muicuiu.dumb1.com/3a03a02a08a00a09/Master-of-the-Dark-Side-Mountain-Masters-amp-Dark-Haven-4-by-Cherise-Sinclair.pdf
    • http://muicuiu.dumb1.com/1a06a02a08a09a00/Western-genre-Novels-including-The-Dark-Tower-Ii-The-Drawing-Of-The-

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