Malicious PDF — malware analysis report

Static analysis result for SHA-256 055d8b6e3e0e35f0…

MALICIOUS

PDF

13.0 KB Created: 2019-05-01 19:52:07 +01:00 Authoring application: mPDF 5.7
MD5: fe32ccfdd651d7128bf3ca3f0f960768 SHA-1: df6206ebdb2f7af49a72e162602426f760020a71 SHA-256: 055d8b6e3e0e35f0843f37b5a41fa5cb2187fe15f88148a82487e23301b006ff
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which is indicative of a link farm or a distribution mechanism for malicious content. While no scripts were explicitly extracted, the presence of embedded URLs within the PDF structure suggests an attempt to redirect users to potentially harmful sites. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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://loaminoo.linkpc.net/1092095093090092/Whispers-in-Autumn-The-Last-Year-1-by-Trisha-Leigh.pdf
    • http://loaminoo.linkpc.net/2098096095097/Autumn-in-the-City-of-Angels-Autumn-1-by-Kirby-Howell.pdf
    • http://loaminoo.linkpc.net/2090096099095099/Autumn-Autumn-1-by-David-Moody.pdf
    • http://loaminoo.linkpc.net/3093090093096093/Autumn-Autumn-1-by-David-Moody.pdf
    • http://loaminoo.linkpc.net/2091091093099093/Falling-for-Autumn-Falling-for-Autumn-1-by-Heather-Topham-Wood.pdf
    • http://loaminoo.linkpc.net/2099092090094097/Pieces-of-Autumn-Pieces-of-Autumn-1-by-Mara-Black.pdf
    • http://loaminoo.linkpc.net/4094090094093090/The-Autumn-Fairy-The-Autumn-Fairy-1-by-Brittany-Fichter.pdf
    • http://loaminoo.linkpc.net/2099093095097097/Autumn-Falls-Autumn-Falls-1-by-Bella-Thorne.pdf
    • http://loaminoo.linkpc.net/1097095099091092/Haunt-Me-by-Liz-Kessler.pdf
    • http://loaminoo.linkpc.net/3095095096096099/You-think-you-know-me-pretty-well-by-David-Kessler.pdf
    • http://loaminoo.linkpc.net/1095099093090092/Orphans-by-Lyle-Kessler.pdf
    • http://loaminoo.linkpc.net/2099096096094092/Beg-Me-to-Slay-by-Lisa-Kessler.pdf
    • http://loaminoo.linkpc.net/3099093099093094/Across-the-Veil-by-Lisa-Kessler.pdf
    • http://loaminoo.linkpc.net/4097097096090096/John-Henry-by-Brad-Kessler.pdf
    • http://loaminoo.linkpc.net/8098096091093095/Eichendorffs-Modernit-t-by-Michael-Kessler.pdf
    • http://loaminoo.linkpc.net/5090093091096093/Trouble-in-Timbuktu-by-Cristina-Kessler.pdf
    • http://loaminoo.linkpc.net/1090090094094098092/Three-Strikes-Audrey-Harte-3-by-Kate-Kessler.pdf
    • http://loaminoo.linkpc.net/7093092090098091/Emily-Windsnap-and-the-Siren-s-Secret-by-Liz-Kessler.pdf
    • http://loaminoo.linkpc.net/2098092097090095/Capture-A-Theory-of-the-Mind-by-David-A-Kessler.pdf
    • http://loaminoo.linkpc.net/3091099091097099/Hunger-Riders-of-the-Apocalypse-1-by-Jackie-Morse-Kessler.pdf

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