Malicious PDF — malware analysis report

Static analysis result for SHA-256 693759d4a1c51c60…

MALICIOUS

PDF

14.9 KB Created: 2019-05-02 01:23:20 +01:00 Authoring application: mPDF 5.7
MD5: 625ef0a812411cf051aed8cdfb18ccb0 SHA-1: bfb93bffca6cbf9de8ea2adb52665b300a05c174 SHA-256: 693759d4a1c51c60fb420deae82beded94394a65e187a3b029a4768eea9c0c5e
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 manipulation or to distribute further malicious content. The ML classifier also flagged this document as malicious. While the specific intent of the linked PDFs is unclear, the sheer volume and nature of the links suggest a malicious campaign.

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://loaminoo.linkpc.net/1091095096090092/Sacrifice-Gryphon-3-by-Stacey-Rourke.pdf
    • http://loaminoo.linkpc.net/4096093090095096/Darkthunder-s-Way-David-Sullivan-3-by-Tom-Deitz.pdf
    • http://loaminoo.linkpc.net/1092094090094094/Ascension-Gryphon-4-by-Stacey-Rourke.pdf
    • http://loaminoo.linkpc.net/4094094092091093/Gryphon-House-by-Ashley-Fogg.pdf
    • http://loaminoo.linkpc.net/4094094090098093/The-Silver-Gryphon-by-Gary-Turner.pdf
    • http://loaminoo.linkpc.net/4096093090095094/Fireshaper-s-Doom-David-Sullivan-2-by-Tom-Deitz.pdf
    • http://loaminoo.linkpc.net/4096093090096093/Dreamseeker-s-Road-David-Sullivan-7-by-Tom-Deitz.pdf
    • http://loaminoo.linkpc.net/4096093090096099/Warstalker-s-Track-David-Sullivan-9-by-Tom-Deitz.pdf
    • http://loaminoo.linkpc.net/8098095090099/The-Silver-Gryphon-Valdemar-Mage-Wars-3-by-Mercedes-Lackey.pdf
    • http://loaminoo.linkpc.net/1090093096090095099/Francophonia-Stories-from-the-Professional-French-Masters-Program-by-Ritt-Deitz.pdf
    • http://loaminoo.linkpc.net/1090093095098096091/Post-Francophile-Stories-from-the-Professional-French-Masters-Program-by-Ritt-Deitz.pdf
    • http://loaminoo.linkpc.net/2097094099090096/The-Crystal-Gryphon-Witch-World-Series-2-High-Hallack-Cycle-5-by-Andre-Norton.pdf
    • http://loaminoo.linkpc.net/2094091099091/King-of-the-Comics-One-Hundred-Years-of-King-Features-Syndicate-by-Dean-Mullaney.pdf
    • http://loaminoo.linkpc.net/1091093098098090/Charlie-Bone-and-the-Hidden-King-The-Children-of-the-Red-King-5-by-Jenny-Nimmo.pdf
    • http://loaminoo.linkpc.net/6091091097092094/King-Rules-Ten-Truths-for-You-Your-Family-and-Our-Nation-to-Prosper-by-Alveda-C-King.pdf
    • http://loaminoo.linkpc.net/6093096090098/Dancing-with-the-King-The-Rise-and-Fall-of-the-King-Country-1864-1885-by-Michael-Belgrave.pdf
    • http://loaminoo.linkpc.net/6097094094093091/King-Goes-to-the-Movies-Vijf-verfilmde-verhalen-by-Stephen-King.pdf
    • http://loaminoo.linkpc.net/4093099095096096/The-Uncrowned-King-King-Rolen-s-Kin-2-by-Rowena-Cory-Daniells.pdf
    • http://loaminoo.linkpc.net/7091096097091090/The-King-s-Bastard-King-Rolen-s-Kin-1-by-Rowena-Cory-Daniells.pdf
    • http://loaminoo.linkpc.net/2097094094099095/King-Alfred-England-s-Greatest-King-by-Christina-Dugan.pdf

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