Malicious PDF — malware analysis report

Static analysis result for SHA-256 e899d88b6b395ef5…

MALICIOUS

PDF

16.8 KB Created: 2019-04-30 04:46:39 +01:00 Authoring application: mPDF 5.7
MD5: 06c4feb6372750a09d3112a78a914785 SHA-1: 0ba38c1758eabf5d287bdf7e368fef7f9520f43f SHA-256: e899d88b6b395ef5b94039bab4b65ba1e19fafc37587e59c0fd8c8d80d4f5dea
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external websites, identified by the PDF_SEO_LINK_FARM heuristic. While the ML classifier strongly flagged this PDF as malicious, the specific intent beyond link farming is unclear as no scripts were extracted. The URLs themselves are marked as confirmed benign, suggesting the maliciousness lies in the aggregation and redirection rather than the immediate destination.

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/7093097097/The-Belles-The-Belles-1-by-Dhonielle-Clayton.pdf
    • http://loaminoo.linkpc.net/6092096099093096/Hazel-Darling-Sweetest-Sister-The-Ladies-of-Pistol-Fanny-s-Book-1-by-Annie-Rose-Welch.pdf
    • http://loaminoo.linkpc.net/4097091090096091/Somebody-s-Baby-by-Annie-Jones.pdf
    • http://loaminoo.linkpc.net/2095092099093/Home-to-Stay-by-Annie-Jones.pdf
    • http://loaminoo.linkpc.net/2093095094097092/The-Barefoot-Believers-by-Annie-Jones.pdf
    • http://loaminoo.linkpc.net/9097098091092094/Sneaking-Out-Little-Sister-5-by-Allan-Frewin-Jones.pdf
    • http://loaminoo.linkpc.net/9097098090091092/The-Great-Sister-War-Stacy-amp-Friends-1-by-Allan-Frewin-Jones.pdf
    • http://loaminoo.linkpc.net/6095096094091094/A-Roaring-in-the-Blood-Remembering-Robert-F-Jones-by-Annie-Proulx.pdf
    • http://loaminoo.linkpc.net/2091094096097095/Not-Without-My-Sister-The-True-Story-of-Three-Girls-Violated-and-Betrayed-by-Those-They-Trusted-by-Kristina-Jones.pdf
    • http://loaminoo.linkpc.net/1093095096090091/The-Fox-Sister-Chapter-1-Little-Sister-The-Fox-Sister-1-by-Christina-Strain.pdf
    • http://loaminoo.linkpc.net/2097094092097/Sister-Light-Sister-Dark-Great-Alta-1-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/1090091091090094/Sister-Sister-by-Eric-Jerome-Dickey.pdf
    • http://loaminoo.linkpc.net/4094091099090092/Shout-Sister-Shout-The-Untold-Story-of-Rock-and-Roll-Trailblazer-Sister-Rosetta-Tharpe-by-Gayle-Wald.pdf
    • http://loaminoo.linkpc.net/3090096091099095/Three-by-Annie-Dillard-Pilgrim-at-Tinker-Creek-An-American-Childhood-The-Writing-Life-by-Annie-Dillard.pdf
    • http://loaminoo.linkpc.net/4097095094098099/Annie-Moore-First-in-Line-for-America-Annie-Moore-1-by-Eithne-Loughrey.pdf
    • http://loaminoo.linkpc.net/8094094093090/Wedding-Belles-by-Allison-Lane.pdf
    • http://loaminoo.linkpc.net/7094097097098093/les-belles-lettres-by-Charlotte-Delbo.pdf
    • http://loaminoo.linkpc.net/6098098095095099/The-Belles-of-Charleston-by-Steve-Brown.pdf
    • http://loaminoo.linkpc.net/7096096092095093/Les-Belles-Indomptables-by-Roger-Colombani.pdf
    • http://loaminoo.linkpc.net/6097093099096092/The-Libertine-Belles-by-Linnet-Moss.pdf
    • http://loaminoo.linkpc.net/2

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