Malicious PDF — malware analysis report

Static analysis result for SHA-256 3db6f8159f03a312…

MALICIOUS

PDF

16.4 KB Created: 2019-04-30 03:48:37 +01:00 Authoring application: mPDF 5.7
MD5: cbdc6d5af9fec6e0c5af1d61411aeb2a SHA-1: 0009e12cd1e48d446c8e817ca2844058b822dbf2 SHA-256: 3db6f8159f03a3121f06f16b001bbb79315c57c39f891fd299e239e4945ea57a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. While the document body is heavily obfuscated, the heuristic 'PDF_SEO_LINK_FARM' indicates the primary purpose is to link to numerous external PDFs. The ML classifier also flagged this as malicious. The URLs themselves are marked as benign, suggesting the maliciousness lies in the aggregation and potential distribution of further content.

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/3095092094098091/An-Agoraphobic-s-Guide-to-Hollywood-How-Michael-Jackson-Got-Me-Out-of-the-House-by-Darlene-Craviotto.pdf
    • http://loaminoo.linkpc.net/1090090095095092092/Kitchen-Workshop-Pizza-Hands-on-Cooking-Lessons-for-Making-Amazing-Pizza-at-Home-by-Ruth-Gresser.pdf
    • http://loaminoo.linkpc.net/1090090095095095097/Truly-Madly-Pizza-One-Incredibly-Easy-Crust-Countless-Inspired-Combinations-amp-Other-Tidbits-to-Make-Pizza-a-Nightly-Affair-by-Suzanne-Lenzer.pdf
    • http://loaminoo.linkpc.net/9096094093094095/T-r-an-T-r-by-Darlene-Gardner.pdf
    • http://loaminoo.linkpc.net/7093091090098098/An-Honorable-Man-by-Darlene-Gardner.pdf
    • http://loaminoo.linkpc.net/2098099092092095/Five-Minutes-More-by-Darlene-Ryan.pdf
    • http://loaminoo.linkpc.net/1091097097090093/Embattled-by-Darlene-Jones.pdf
    • http://loaminoo.linkpc.net/1097096099092098/Sea-Change-by-Darlene-Marshall.pdf
    • http://loaminoo.linkpc.net/9094096097094/Until-Forever-by-Darlene-Shortridge.pdf
    • http://loaminoo.linkpc.net/3097093092093093/Cole-For-Christmas-by-Darlene-Gardner.pdf
    • http://loaminoo.linkpc.net/2095097096097093/Zombie-Slayer-by-Darlene-Reilley.pdf
    • http://loaminoo.linkpc.net/1091098096099090/The-Fifty-List-by-Darlene-Hesley.pdf
    • http://loaminoo.linkpc.net/1090096099090099097/The-Ultimate-Marriage-Vow-by-Darlene-Schacht.pdf
    • http://loaminoo.linkpc.net/3094092099097091/Keeping-Secrets-by-Darlene-Fredette.pdf
    • http://loaminoo.linkpc.net/1091095099096092/Captain-Sinister-s-Lady-by-Darlene-Marshall.pdf
    • http://loaminoo.linkpc.net/2096099096095094/Conversations-for-Power-and-Possibility-by-Darlene-Chrissley.pdf
    • http://loaminoo.linkpc.net/2091099099094092/Sweet-on-You-The-Cupcake-Diaries-1-by-Darlene-Panzera.pdf
    • http://loaminoo.linkpc.net/3093096091090092/Wheels-of-Change-by-Darlene-Beck-Jacobson.pdf
    • http://loaminoo.linkpc.net/4090092092091097/Amanda-in-Arabia-The-Perfume-Flask-by-Darlene-Foster.pdf
    • http://loaminoo.linkpc.net/4097096096090092/Sprinkled-with-Kisses-The-Cupcake-Diaries-5-by-Darlene-Panzera.pdf

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