Malicious PDF — malware analysis report

Static analysis result for SHA-256 62a80f10e9b26e6d…

MALICIOUS

PDF

14.0 KB Created: 2019-04-30 05:17:59 +01:00 Authoring application: mPDF 5.7
MD5: 0f8c42ee43ae658fcc61b76e99c52f0d SHA-1: 900d45f86766ca65feada2f495a89b3c19601cf2 SHA-256: 62a80f10e9b26e6d359eeff413a58ee7f64149e5aa6fe563eaa61520c3e6d12c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, disguised as book titles, which is indicative of a link farm or phishing attempt. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure itself facilitates the embedding of these malicious links, likely intended to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/7093096098091097/Jorge-Luis-Borges-Selected-Poems-1923-1967-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/5098094093093097/Professor-Borges-A-Course-on-English-Literature-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/3093090091090/Labyrinths-Selected-Stories-and-Other-Writings-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/4093091096090/Dreamtigers-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/3092097090099/Ficciones-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/3092092094098099/Fictions-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/4094095097092093/A-Personal-Anthology-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/3092096096097/Collected-Fictions-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/3094091092094/The-Aleph-and-Other-Stories-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/6093095095092094/This-Craft-of-Verse-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/1093099098094096/Brodie-s-Report-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/2099090098097093/Chronicles-of-Bustos-Domecq-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/1090097091090091094/Aleph-and-Other-Stories-1933-69-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/1093099098092096/A-Universal-History-of-Iniquity-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/2099090098095097/Doctor-Brodie-s-Report-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/5092096091093098/Seven-Conversations-with-Jorge-Luis-Borges-by-Fernando-Sorrentino.pdf
    • http://loaminoo.linkpc.net/1093097091098090/The-Book-of-Imaginary-Beings-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/2094097092093/Tl-n-Uqbar-Orbis-Tertius-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/3093090090095093/The-Book-of-Sand-amp-Shakespeare-s-Memory-by-Jorge-Luis-Borges.pdf
    • http://loaminoo.linkpc.net/3092097097091090/Lotterie-in-Babylon-Die-sch-nsten-Erz-hlungen-by-Jorge-Luis-Borges.pdf

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