Malicious PDF — malware analysis report

Static analysis result for SHA-256 899847d4f0c80c89…

MALICIOUS

PDF

21.7 KB Created: 2019-04-30 05:06:33 +01:00 Authoring application: mPDF 5.7
MD5: 260408b29512431559a38067072ba00f SHA-1: 1dca8928e327286a73aa18e6cbc682e98ba9c1d2 SHA-256: 899847d4f0c80c896dcc423fbcc8df937ff7df457f4b667de88bc05bf9ba11cf
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, presented as academic or medical texts. This technique is often used to drive traffic to malicious sites or to host further malicious content. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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://muicuiu.dumb1.com/6a02a06a08a01a05/Morgan-amp-Mikhail-s-Clinical-Anesthesiology-by-John-F-Butterworth.pdf
    • http://muicuiu.dumb1.com/5a06a05a00a00a08/Linne-amp-Ringsrud-s-Clinical-Laboratory-Science-Concepts-Procedures-and-Clinical-Applications-by-Mary-Louise-Turgeon.pdf
    • http://muicuiu.dumb1.com/7a09a02a05a02a03/Manuscripts-Don-t-Burn-Mikhail-Bulgakov-A-Life-in-Letters-and-Diaries-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/7a00a05a03a05a06/Treating-Victims-of-Child-Sexual-Abuse-Implications-for-Clinical-Practice-by-John-Briere.pdf
    • http://muicuiu.dumb1.com/7a02a06a03a09a06/Morgan-s-Legacy-Morgan-s-Wife-Morgan-s-Son-by-Lindsay-McKenna.pdf
    • http://muicuiu.dumb1.com/7a09a02a05a02a09/The-Early-Plays-of-Mikhail-Bulgakov-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/7a01a09a01a00a08/Vasopressin-and-Oxytocin-From-Genes-to-Clinical-Applications-From-Genes-to-Clinical-Applications-by-Dominique-Poulain.pdf
    • http://muicuiu.dumb1.com/4a07a04a03a07a05/Mojo-by-Jez-Butterworth.pdf
    • http://muicuiu.dumb1.com/1a04a00a05a00a05/Smashing-Physics-by-Jon-Butterworth.pdf
    • http://muicuiu.dumb1.com/1a04a01a02a07/Leroy-and-the-Old-Man-by-William-E-Butterworth-III.pdf
    • http://muicuiu.dumb1.com/1a09a01a01a08/Blind-Eye-Benjamin-Justice-5-by-John-Morgan-Wilson.pdf
    • http://muicuiu.dumb1.com/5a09a06a06a05/Discover-the-Power-Within-You-by-Eric-Butterworth.pdf
    • http://muicuiu.dumb1.com/9a05a06a08a07a03/Red-Blood-Cell-Substitutes-Basic-Principles-and-Clinical-Applications-Basic-Principles-and-Clinical-Applications-by-Alan-Rudolph.pdf
    • http://muicuiu.dumb1.com/2a05a03a04a04a00/Pompeii-The-Living-City-by-Alex-Butterworth.pdf
    • http://muicuiu.dumb1.com/1a01a00a08a01a04/As-The-Waltz-Was-Ending-by-Emma-Macalik-Butterworth.pdf
    • http://muicuiu.dumb1.com/4a08a08a04a00/Radium-Watch-Dial-Painters-Poems-by-D-S-Butterworth.pdf
    • http://muicuiu.dumb1.com/7a04a04a03a03a00/Ricci-Flow-and-the-Poincare-Conjecture-Clay-Mathematics-Monographs-by-John-W-Morgan.pdf
    • http://muicuiu.dumb1.com/1a09a04a01a09a03/Cup-of-Gold-A-Life-of-Sir-Henry-Morgan-Buccaneer-with-Occasional-Reference-to-History-by-John-Steinbeck.pdf
    • http://muicuiu.dumb1.com/2a01a07a07a00a06/The-World-That-Never-Was-A-True-Story-of-Dreamers-Schemers-Anarchists-and-Secret-Agents-by-Alex-Butterworth.pdf
    • http://muicuiu.dumb1.com/7a01a09a04a00/Jim-Morgan-and-the-Pirates-of-the-Black-Skull-Jim-Morgan-2-by-James-Matlack-Raney.pdf
    • http://muicuiu.dumb1.com/7a01a09a01a00a08/Vasopressin-and-Oxytocin-From-Genes-to-Clinical-Applications-Fro