Malicious PDF — malware analysis report

Static analysis result for SHA-256 c031ab0e5f5d197b…

MALICIOUS

PDF

14.6 KB Created: 2019-05-07 04:00:17 +01:00 Authoring application: mPDF 5.7
MD5: 9ee1bceaf66f882e917a81ab1f1fa01c SHA-1: 77b0a48810ebd9a05814e5c3badd99b7f3b38b6d SHA-256: c031ab0e5f5d197bd7f6d77d8a645b648b0d25fdcdf0701a43aa29d62d10d36c
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, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

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/3091095097092095/Recipe-for-Trouble-The-Cupcake-Club-2-by-Sheryl-Berk.pdf
    • http://loaminoo.linkpc.net/2091096094093091/Babycakes-Cupcake-Club-3-by-Donna-Kauffman.pdf
    • http://loaminoo.linkpc.net/2092098096094091/The-Recipe-Club-A-Tale-of-Food-and-Friendship-by-Andrea-Israel.pdf
    • http://loaminoo.linkpc.net/7097096091098/Alexis-The-Icing-on-the-Cupcake-Cupcake-Diaries-20-by-Coco-Simon.pdf
    • http://loaminoo.linkpc.net/4097091096098/Katie-and-the-Cupcake-Cure-Cupcake-Diaries-1-by-Coco-Simon.pdf
    • http://loaminoo.linkpc.net/1090096092095090/Angels-Club-2-The-Trouble-with-Boys-Angels-Club-2-by-Courtney-Vail.pdf
    • http://loaminoo.linkpc.net/8091092093092098/Breakfast-Recipe-Book-Easy-to-Cook-Recipe-by-Vesco-Inc.pdf
    • http://loaminoo.linkpc.net/8093092095099098/Horse-Trouble-Saddle-Club-23-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/4099098095091092/Mallory-and-the-Trouble-With-Twins-The-Baby-Sitters-Club-21-by-Ann-M-Martin.pdf
    • http://loaminoo.linkpc.net/9090090095095098/Trouble-with-Trix-Winx-Club-Fairy-Novels-by-Randi-Reisfeld.pdf
    • http://loaminoo.linkpc.net/2090094098098099/The-Runes-of-Elfland-by-Ari-Berk.pdf
    • http://loaminoo.linkpc.net/8096098093094/Corporate-Finance-by-Jonathan-Berk.pdf
    • http://loaminoo.linkpc.net/3097092093096091/The-Sun-Grows-Cold-by-Howard-Berk.pdf
    • http://loaminoo.linkpc.net/9091093092099/Remedies-of-the-Heart-by-Ariel-Berk.pdf
    • http://loaminoo.linkpc.net/9097093099093095/Martini-Book-by-Sally-Ann-Berk.pdf
    • http://loaminoo.linkpc.net/7096090090092093/Trouble-Rob-amp-Sabrina-s-Story-Trouble-1-3-by-Emme-Rollins.pdf
    • http://loaminoo.linkpc.net/3094097096094097/Looking-For-Trouble-Texas-Trouble-4-by-Becky-McGraw.pdf
    • http://loaminoo.linkpc.net/2092090095095091/Trouble-With-the-Law-Texas-Trouble-11-by-Becky-McGraw.pdf
    • http://loaminoo.linkpc.net/6095098094094/The-Magic-Flute-Die-Zauberflote-an-Alchemical-Allegory-With-CD-by-M-F-M-van-den-Berk.pdf
    • http://loaminoo.linkpc.net/3090092092098094/The-Secret-History-of-Mermaids-and-Creatures-of-the-Deep-by-Ari-Berk.pdf
    • http://loaminoo.linkpc.net/9090090095095098/Trouble-with-Trix-Winx-Club-Fairy-Novels-by-Randi-Re

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