Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c28c7ad270c5d7f…

MALICIOUS

PDF

16.6 KB Created: 2019-05-01 17:20:57 +01:00 Authoring application: mPDF 5.7
MD5: 499e1e6124ba44217ef6fcd6ac3af2ec SHA-1: c0f9e4b9c8a8c1854af94da7dcba85bedea78d21 SHA-256: 7c28c7ad270c5d7f6bc7cbddbe61c143593d00196f1414f50f7b9663b7036492
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs that point to external PDF files, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. While the URLs themselves are labeled as benign, the sheer volume and structure suggest an attempt to manipulate search engine results or to host potentially malicious content disguised as legitimate documents. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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/2091096094092096/Fianc-by-Friday-The-Weekday-Brides-3-by-Catherine-Bybee.pdf
    • http://loaminoo.linkpc.net/7096098090097097/My-Wife-His-Fiance-His-Wife-My-Fiance-Book-1-by-Chaise-Gaines.pdf
    • http://loaminoo.linkpc.net/4098090093098091/Pearls-for-Christmas-by-Catherine-Henreid.pdf
    • http://loaminoo.linkpc.net/2099097097092091/The-Christmas-Star-by-Catherine-Lanigan.pdf
    • http://loaminoo.linkpc.net/1095099090099093/The-Twelve-Dates-of-Christmas-by-Catherine-Hapka.pdf
    • http://loaminoo.linkpc.net/3091093096099093/Merry-Christmas-Curious-George-by-Margret-Rey.pdf
    • http://loaminoo.linkpc.net/3097093092091095/Christmas-Proposals-Her-Christmas-Romeo-The-Tycoon-s-Christmas-Engagement-A-Bride-for-Christmas-by-Carole-Mortimer.pdf
    • http://loaminoo.linkpc.net/3097094096092093/One-Christmas-Night-Highland-Christmas-A-Wife-For-Christmas-Ian-s-Gift-by-Ruth-Ryan-Langan.pdf
    • http://loaminoo.linkpc.net/2092095091092099/A-Bride-By-Christmas-Home-For-Christmas-The-Wise-Virgin-Tumbleweed-Christmas-by-Heather-Graham.pdf
    • http://loaminoo.linkpc.net/7096098091093094/The-Right-Fiance-by-Lee-Wilkinson.pdf
    • http://loaminoo.linkpc.net/1091098092093093091/Arrogant-Fianc-by-T-L-Smith.pdf
    • http://loaminoo.linkpc.net/1094097099094099/Four-Week-Fiance-2-by-J-S-Cooper.pdf
    • http://loaminoo.linkpc.net/5096091095094095/My-Best-Friend-s-Fianc-by-Keren-Hughes.pdf
    • http://loaminoo.linkpc.net/5097097098093/Fiance-by-Fate-Anyone-But-You-1-by-Jennifer-Shirk.pdf
    • http://loaminoo.linkpc.net/7096097099096095/Startup-Fianc-by-Shilpa-Mudiganti.pdf
    • http://loaminoo.linkpc.net/7096097099096091/Fianc-for-the-Night-by-Melissa-McClone.pdf
    • http://loaminoo.linkpc.net/7096098090090099/Graham-s-Fiance-by-Elizabeth-Nelson.pdf
    • http://loaminoo.linkpc.net/7096098091094091/Sleeping-with-Her-Fake-Fiance-by-Sasha-Savage.pdf
    • http://loaminoo.linkpc.net/4091090096095094/Seven-Day-Fianc-Love-and-Games-2-by-Rachel-Harris.pdf
    • http://loaminoo.linkpc.net/5090094099096091/Christmas-Once-Is-Christmas-Still-a-Christmas-Carol-with-Illustrations-by-Phillips-Brooks.pdf

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