Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a9b93085f5ad32b…

MALICIOUS

PDF

16.3 KB Created: 2019-04-30 02:50:30 +01:00 Authoring application: mPDF 5.7
MD5: f0d2f8f6e67056f569f693bca4ab8520 SHA-1: 35626aa4d78064b88aeda356237045def3438bd8 SHA-256: 7a9b93085f5ad32b1d4a321e6d6a16e7bc9ebda43540b9d3b0a60c262e98c146
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, hosted on the domain 'loaminoo.linkpc.net'. This is indicative of a link farm, likely used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily obfuscated, preventing a more detailed analysis of the immediate user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/7099097090095092/Four-Josie-D-Josie-DuPuy-Book-2-by-H-Berkeley-Rourke.pdf
    • http://loaminoo.linkpc.net/1091099096097090091/The-Book-of-Numbers-The-Secret-of-Numbers-and-How-They-Changed-the-World-by-Peter-J-Bentley.pdf
    • http://loaminoo.linkpc.net/2099092095093095/The-Numbers-Game-The-Commonsense-Guide-to-Understanding-Numbers-in-the-News-in-Politics-and-in-Life-by-Michael-Blastland.pdf
    • http://loaminoo.linkpc.net/2092093093099091/By-The-Numbers-By-the-Numbers-1-by-Chris-Owen.pdf
    • http://loaminoo.linkpc.net/1096093092092096/Numbers-Numbers-1-by-Rachel-Ward.pdf
    • http://loaminoo.linkpc.net/1094090095090097/The-Grapes-of-Math-How-Life-Reflects-Numbers-and-Numbers-Reflect-Life-by-Alex-Bellos.pdf
    • http://loaminoo.linkpc.net/5099090099091090/Strength-in-Numbers-Strength-in-Numbers-1-by-Reagan-Hawk.pdf
    • http://loaminoo.linkpc.net/3099095094095/No-Safety-in-Numbers-No-Safety-in-Numbers-1-by-Dayna-Lorentz.pdf
    • http://loaminoo.linkpc.net/2096096097091097/The-20-s-Girl-the-ghost-and-all-that-jazz-by-June-Kearns.pdf
    • http://loaminoo.linkpc.net/2091096099090090/Lucky-13-Deadlines-amp-Diamonds-4-by-Morgan-Kearns.pdf
    • http://loaminoo.linkpc.net/3094096095093099/Guarding-Sierra-Soldiering-On-2-by-Aislinn-Kearns.pdf
    • http://loaminoo.linkpc.net/9093098099096096/The-Lewinsky-Reversal-A-SHORT-STORY-by-J-M-Kearns.pdf
    • http://loaminoo.linkpc.net/5096090095097091/Station-Alpha-Soldiering-On-1-by-Aislinn-Kearns.pdf
    • http://loaminoo.linkpc.net/2093095092090092/Virgins-amp-Tricksters-by-Rosalie-Morales-Kearns.pdf
    • http://loaminoo.linkpc.net/1090097095098099098/Officer-Involved-Farrell-and-Kearns-3-by-Sean-Lynch.pdf
    • http://loaminoo.linkpc.net/1090097096090091092/The-Fourth-Motive-Farrell-amp-Kearns-2-by-Sean-Lynch.pdf
    • http://loaminoo.linkpc.net/3094091098095091/Ecospirit-Religions-and-Philosophies-for-the-Earth-by-Laurel-Kearns.pdf
    • http://loaminoo.linkpc.net/2091097092092096/Fade-to-Black-Deadlines-amp-Diamonds-1-by-Morgan-Kearns.pdf
    • http://loaminoo.linkpc.net/1097098094097094/Out-of-Left-Field-Deadlines-amp-Diamonds-3-by-Morgan-Kearns.pdf
    • http://loaminoo.linkpc.net/1099098090091/T-Cells-amp-Sympathy-Monologues-in-the-Age-of-AIDS-by-Michael-Kearns.pdf
    • http://loaminoo.linkpc.net/5099090099091090/Stre

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