Malicious PDF — malware analysis report

Static analysis result for SHA-256 286f89227c78013c…

MALICIOUS

PDF

14.1 KB Created: 2019-05-07 04:58:29 +01:00 Authoring application: mPDF 5.7
MD5: e64bf829285abbe1c072907fc3ecd173 SHA-1: 1eaec98df2d71b252e06a54fb210b07afb9b9fd9 SHA-256: 286f89227c78013c40c354788b0923d3d6bea6b8bb7644f9f4ff1e13a690774f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified as a link farm. While the document body is heavily corrupted, the presence of numerous links suggests a malicious intent, possibly for SEO manipulation or to direct users to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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/4099091090092092/Stalking-the-Puzzle-Lady-Puzzle-Lady-7-by-Parnell-Hall.pdf
    • http://loaminoo.linkpc.net/7094093097093094/NYPD-Puzzle-Puzzle-Lady-15-by-Parnell-Hall.pdf
    • http://loaminoo.linkpc.net/7094093096099092/The-Purloined-Puzzle-Puzzle-Lady-19-by-Parnell-Hall.pdf
    • http://loaminoo.linkpc.net/7094093099090090/The-KenKen-Killings-Puzzle-Lady-12-by-Parnell-Hall.pdf
    • http://loaminoo.linkpc.net/7092097098091/The-Manhattan-Puzzle-Puzzle-3-by-Laurence-O-39-Bryan.pdf
    • http://loaminoo.linkpc.net/2092094097093095/Lantern-Puzzle-by-Ye-Chun.pdf
    • http://loaminoo.linkpc.net/1091092097091099090/Cat-Puzzle-by-Sutton-Bartl.pdf
    • http://loaminoo.linkpc.net/7094093098094094/The-Personality-Puzzle-by-David-C-Funder.pdf
    • http://loaminoo.linkpc.net/5090093093092091/Puzzle-Christmas-by-Susannah-Leigh.pdf
    • http://loaminoo.linkpc.net/7094093098095090/Chinese-Puzzle-No-Sin-Mysteries-1-by-T-M-Raymond.pdf
    • http://loaminoo.linkpc.net/4099094096096099/Puzzle-Pirates-by-Susannah-Leigh.pdf
    • http://loaminoo.linkpc.net/6099094096096095/You-re-the-puzzle-of-my-heart-by-Gazchela-Aerienne.pdf
    • http://loaminoo.linkpc.net/6098091095093097/more-puzzles-to-puzzle-you-by-Shakuntala-Devi.pdf
    • http://loaminoo.linkpc.net/4095095093097097/Lady-Merry-s-Dashing-Champion-Lady-Trilogy-3-by-Jeane-Westin.pdf
    • http://loaminoo.linkpc.net/3092090095093097/Lady-Slings-the-Booze-Lady-Sally-s-2-Callahan-s-5-by-Spider-Robinson.pdf
    • http://loaminoo.linkpc.net/7094093099090092/Kanji-Kan-Puzzle-Book-1-by-Elizabeth-Plain.pdf
    • http://loaminoo.linkpc.net/1091098091099098093/Scroll-Saw-Puzzle-Patterns-by-Patrick-Spielman.pdf
    • http://loaminoo.linkpc.net/3091096091094097/Another-Piece-of-the-Puzzle-Puppy-Development-by-Pat-Hastings.pdf
    • http://loaminoo.linkpc.net/4099095097095099/Puppy-Puzzle-Animal-Ark-Pets-1-by-Ben-M-Baglio.pdf
    • http://loaminoo.linkpc.net/2096095093093095/Danny-Calloway-and-the-Puzzle-House-by-Z-C-Bolger.pdf

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