Malicious PDF — malware analysis report

Static analysis result for SHA-256 b865fd69afeb0784…

MALICIOUS

PDF

16.2 KB Created: 2019-04-29 23:25:43 +01:00 Authoring application: mPDF 5.7
MD5: 0d3658263a677ef2ef5a620bda605dbb SHA-1: 71b377a7b50ef99210bc9fdc3a2bf2095551140a SHA-256: b865fd69afeb0784b1b848410850df9614615b53a4276ec6dac3a26ac591cdff
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, identified as a link farm. The ML classifier strongly indicates maliciousness. The primary attack pattern involves leveraging these links, likely to direct users to malicious sites or to manipulate search engine results. No scripts were extracted, and the document body was heavily obfuscated, but the sheer volume of links and the ML score are strong indicators of malicious intent.

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/5099098091098/Halfway-to-Halfway-amp-Other-River-Stories-by-Dick-Linford.pdf
    • http://loaminoo.linkpc.net/1093095099092094/Too-Perfect-Perfect-Trilogy-3-by-Julie-Ortolon.pdf
    • http://loaminoo.linkpc.net/1091091092095095096/Julie-Hasler-s-Cross-Stitch-Designs-by-Julie-Hasler.pdf
    • http://loaminoo.linkpc.net/2097093091098090/Fifty-First-Times-by-Julie-Cross.pdf
    • http://loaminoo.linkpc.net/9090096098090092/Sturz-in-die-Zeit-Tempest-1-by-Julie-Cross.pdf
    • http://loaminoo.linkpc.net/3099097099093091/Practice-Makes-Perfect-by-Julie-James.pdf
    • http://loaminoo.linkpc.net/1094095091099096/Cross-the-Line-Boston-Love-2-by-Julie-Johnson.pdf
    • http://loaminoo.linkpc.net/1091091092096099095/500-Cross-Stitch-Charted-Designs-by-Julie-Hasler.pdf
    • http://loaminoo.linkpc.net/1091091092096099096/Cats-A-Cross-Stitch-Alphabet-by-Julie-Hasler.pdf
    • http://loaminoo.linkpc.net/1090096097099094094/The-Little-Paris-Patisserie-A-heartwarming-and-feel-good-cosy-romance---perfect-for-fans-of-Bake-Off-Romantic-Escapes-Book-3-by-Julie-Caplin.pdf
    • http://loaminoo.linkpc.net/1090090099098091093/Eeny-Meeny-Criminy-Crow-Can-a-crow-predict-murder-Which-Criss-Cross-County-residents-will-die-before-the-year-is-over-by-Julie-C-Eger.pdf
    • http://loaminoo.linkpc.net/1099099094094093/Tempest-Tempest-1-by-Julie-Cross.pdf
    • http://loaminoo.linkpc.net/2099092094097095/Meet-Me-Halfway-by-Javan.pdf
    • http://loaminoo.linkpc.net/6097092096093/The-Halfway-House-by-Guillermo-Rosales.pdf
    • http://loaminoo.linkpc.net/3098094091095094/I-ll-Meet-You-Halfway-by-John-Schindel.pdf
    • http://loaminoo.linkpc.net/2091093099093090/Halfway-Aspiration-for-Deliverance-1-by-Lokesh-Sharma.pdf
    • http://loaminoo.linkpc.net/4092098092094093/A-Halfway-Decent-Girl-by-Rhonda-Talbot.pdf
    • http://loaminoo.linkpc.net/2099090098095093/Girlbomb-A-Halfway-Homeless-Memoir-by-Janice-Erlbaum.pdf
    • http://loaminoo.linkpc.net/4096098091098098/Halfway-Home-Drawing-My-Way-Through-Japan-by-Christine-Mari-Inzer.pdf
    • http://loaminoo.linkpc.net/1091096092092094095/Halfway-to-Heaven-Darjeeling-and-Its-Mountain-Railway-by-Terry-Martin.pdf
    • http://loaminoo.linkpc.net/1090090099098091093/Eeny-Meeny-Criminy-Crow-Can-a-c

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