Malicious PDF — malware analysis report

Static analysis result for SHA-256 773e21476e6b4b76…

MALICIOUS

PDF

17.0 KB Created: 2019-04-30 04:44:46 +01:00 Authoring application: mPDF 5.7
MD5: 4ed4bf20f4e6e0c2f8170763959c5ad9 SHA-1: 9a4fa43fcd5ae38732a8ebfd9442005215278a63 SHA-256: 773e21476e6b4b765fad203034a69df20990f00455e32f14b37ec83e3d4d634b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and contains a large number of embedded external links, characteristic of a link farm or SEO manipulation tactic. While the specific intent beyond link distribution is unclear due to the lack of readable document body text, the presence of numerous external links suggests an attempt to drive traffic or potentially distribute malicious content indirectly. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this malicious pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/4093096093091090/Miniature-Men-by-Michael-Buckley.pdf
    • http://loaminoo.linkpc.net/4096099099096090/The-Universe-in-Miniature-in-Miniature-by-Patrick-Somerville.pdf
    • http://loaminoo.linkpc.net/5094096090095/M-Is-for-Mama-s-Boy-NERDS-2-by-Michael-Buckley.pdf
    • http://loaminoo.linkpc.net/4095093098094097/Raging-Sea-Undertow-2-by-Michael-Buckley.pdf
    • http://loaminoo.linkpc.net/1091094093097090095/The-Cheerleaders-of-Doom-NERDS-3-by-Michael-Buckley.pdf
    • http://loaminoo.linkpc.net/3099093091091/Magic-and-Other-Misdemeanors-The-Sisters-Grimm-5-by-Michael-Buckley.pdf
    • http://loaminoo.linkpc.net/3090097099098/Kel-Gilligan-39-s-Daredevil-Stunt-Show-by-Michael-Buckley.pdf
    • http://loaminoo.linkpc.net/2099091098096096/The-Fairy-Tale-Detectives-The-Sisters-Grimm-1-by-Michael-Buckley.pdf
    • http://loaminoo.linkpc.net/6090098098099095/Miniature-Bonsai-by-Herb-Gustafson.pdf
    • http://loaminoo.linkpc.net/9096095099092093/Miniature-Quilling-by-Diane-Boden-Crane.pdf
    • http://loaminoo.linkpc.net/9098093097096095/Malice-In-Miniature-Dorothy-Martin-4-by-Jeanne-M-Dams.pdf
    • http://loaminoo.linkpc.net/1090097090094093095/Symphony-No-35-in-D-Major-Haffner-KV-385-Miniature-Score-by-Wolfgang-Ama-Mozart.pdf
    • http://loaminoo.linkpc.net/6092095091093092/On-Longing-Narratives-of-the-Miniature-the-Gigantic-the-Souvenir-the-Collection-by-Susan-Stewart.pdf
    • http://loaminoo.linkpc.net/3097096090092094/The-Miniature-World-of-Marvin-amp-James-The-Masterpiece-Adventures-1-by-Elise-Broach.pdf
    • http://loaminoo.linkpc.net/6095090094090098/Gardening-in-Miniature-Create-Your-Own-Tiny-Living-World-by-Janit-Calvo.pdf
    • http://loaminoo.linkpc.net/9092098091091099/Weaving-Designs-by-Bertha-Gray-Hayes-Miniature-Overshot-Patterns-by-Weavers-Guild-of-Rhode-Island.pdf
    • http://loaminoo.linkpc.net/5092097094093096/Ancient-Near-Eastern-Seals-from-the-Kist-Collection-Three-Millennia-of-Miniature-Reliefs-by-Joost-Kist.pdf
    • http://loaminoo.linkpc.net/1098096095090097/The-Things-That-Keep-Us-Here-by-Carla-Buckley.pdf
    • http://loaminoo.linkpc.net/3096090094096099/Nostalgia-by-Jonathan-Buckley.pdf
    • http://loaminoo.linkpc.net/4094099094090096/Invisible-by-Carla-Buckley.pdf

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