Malicious PDF — malware analysis report

Static analysis result for SHA-256 870cb91821f11b8b…

MALICIOUS

PDF

18.6 KB Created: 2019-05-02 01:17:37 +01:00 Authoring application: mPDF 5.7
MD5: 9ccd0dcba3700d766a6a595fc9de0ff6 SHA-1: 8910b3ccee137c0abaf20c89cafcae8359c502e1 SHA-256: 870cb91821f11b8bd408ee06c81a08a2da2968bf1d47b09bf9e536a08d7cd3ac
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier strongly indicated maliciousness. While the individual linked URLs are currently marked as benign, the sheer volume and the heuristic firing suggest a malicious intent to redirect users to potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/7095094096095093/There-s-a-Party-at-Mona-s-Tonight-by-Harry-Allard.pdf
    • http://loaminoo.linkpc.net/3091091095094097/The-Stupids-Step-Out-The-Stupids-1-by-Harry-Allard.pdf
    • http://loaminoo.linkpc.net/1094099091097090/Miss-Nelson-Has-a-Field-Day-Miss-Nelson-3-by-Harry-Allard.pdf
    • http://loaminoo.linkpc.net/3091091092093098/Miss-Nelson-Is-Back-Miss-Nelson-2-by-Harry-Allard.pdf
    • http://loaminoo.linkpc.net/7091093099095099/Forking-Fantastic-Put-the-Party-Back-in-Dinner-Party-by-Zora-O-39-Neill.pdf
    • http://loaminoo.linkpc.net/5095098099090092/Two-Badges-The-Lives-of-Mona-Ruiz-by-Mona-Ruiz.pdf
    • http://loaminoo.linkpc.net/5092090091090099/The-Formation-of-National-Party-Systems-Federalism-and-Party-Competition-in-Canada-Great-Britain-India-and-the-United-States-by-Pradeep-K-Chhibber.pdf
    • http://loaminoo.linkpc.net/1097090093092092/After-the-Party-Ralph-s-Party-2-by-Lisa-Jewell.pdf
    • http://loaminoo.linkpc.net/1093096091095098/At-the-Party-At-the-Party-1-4-by-Lauren-Barnholdt.pdf
    • http://loaminoo.linkpc.net/5092095097091099/Harry-Potter-and-the-Sorcerer-s-Stone---Harry-Potter-dan-Batu-Bertuah-Harry-Potter-1-by-J-K-Rowling.pdf
    • http://loaminoo.linkpc.net/4092093090095097/Reckless-A-Memoir-by-Rebecca-Allard.pdf
    • http://loaminoo.linkpc.net/7095094095099095/Woman-of-Stones-by-Meredith-Allard.pdf
    • http://loaminoo.linkpc.net/4099099092093093/Speeches-To-The-Party-The-Revolutionary-Perspective-And-The-Revolutionary-Party-by-James-P-Cannon.pdf
    • http://loaminoo.linkpc.net/7098094091096090/Ma-belle-m-re-me-d-teste-by-Laure-Allard-D-39-Adesky.pdf
    • http://loaminoo.linkpc.net/7095094097090091/The-Hesitant-Detective-and-The-Wreck-of-the-Allard-by-Robert-Wanless.pdf
    • http://loaminoo.linkpc.net/5092095097096094/Harry-Potter-and-the-Goblet-of-Fire---Harry-Potter-dan-Piala-Api-Harry-Potter-4-by-J-K-Rowling.pdf
    • http://loaminoo.linkpc.net/1096091099097094/Harry-Watt-Bounty-Hunter-2150-AD---And-Harry-s-Life-Just-Got-More-Complicated-by-Rob-Guy.pdf
    • http://loaminoo.linkpc.net/1091095096097095096/Diogee-A-Story-about-a-Grandmother-s-Love-for-Her-Grand-Dog-by-June-Allard-Berte.pdf
    • http://loaminoo.linkpc.net/1091095096098092096/Diogee-A-Story-about-a-Grandmother-s-Love-for-Her-Grand-dog-by-June-Allard-Berte.pdf
    • http://loaminoo.linkpc.net/1091095096097095095/Diogee-A-Story-about-a-Grandmother-s-Love-for-Her-Grand-Dog-by-June-Allard-Berte.pdf
    • http://loaminoo.linkpc.net/5092095097091099/Harry-Potter-and-the-Sor