Malicious PDF — malware analysis report

Static analysis result for SHA-256 7119cb5859952d04…

MALICIOUS

PDF

16.4 KB Created: 2019-04-30 03:10:18 +01:00 Authoring application: mPDF 5.7 First seen: 2021-06-04
MD5: b3d27727c7ca6915c3cfe1d28a5092ec SHA-1: 2fdb5aba7ebe9f67b89d63aa931d5e77c9d1604d SHA-256: 7119cb5859952d0409f2edf7909a24490036ae9fb09ef04f06f16031ae66190d
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. While the URLs themselves are marked as benign, the sheer volume and the heuristic 'PDF_SEO_LINK_FARM' indicate a malicious intent to manipulate search engine results or redirect users to potentially harmful content. The presence of a 'download button' lure further supports a deceptive user interaction pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/4a01a05a09a01a08/Since-We-Fell-by-Dennis-Lehane.pdf In PDF document text
    • http://muicuiu.dumb1.com/1a07a09a02a09a03/Live-by-Night-by-Dennis-Lehane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a02a05a02a08a03/Shutter-Island-by-Dennis-Lehane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a08a04/World-Gone-By-Coughlin-3-by-Dennis-Lehane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a00a06a01a00a05/Moonlight-Mile-by-Dennis-Lehane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a02a08a04a01a03/Interview-with-Dennis-Lehane-by-Andrew-Gulli.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a01a08a02a00a04/A-Drink-Before-the-War-Kenzie-amp-Gennaro-1-by-Dennis-Lehane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a05a02a01a08/Darkness-Take-My-Hand-Kenzie-amp-Gennaro-2-by-Dennis-Lehane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a02a08a04a04a06/Novels-by-Dennis-Lehane-Shutter-Island-a-Drink-Before-the-War-the-Given-Day-Prayers-for-Rain-Sacred-by-Books-LLC.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a07a09a05a03a04/Sanguine-Abgrund-by-Max-Lupin.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a07a09a04a04a06/-ber-dem-Abgrund-by-Dani-Pettrey.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a05a02a07a03a08/Abgrund-Nightmares-and-Dreamscapes-by-Stephen-King.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a07a09a05a08a08/Der-Nachtelf---Himmel-und-Abgrund-by-Markus-Tillmanns.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a04a00a02a06a05/Das-Euro-Desaster-Wie-deutsche-Wirtschaftspolitik-die-Eurozone-in-den-Abgrund-treibt-by-Heiner-Flassbeck.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a02a08a04a01a08/What-Goes-Around-Comes-Around-Brian-McNulty-2-by-Con-Lehane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a02a08a05a08a09/Sequences-and-Pathogens-by-Dorothy-Lehane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a02a08a04a04a04/The-Quest-of-Three-Abbots-by-Brendan-Lehane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a02a08a04a05a07/The-Northwest-Passage-The-Seafarers-20-by-Brendan-Lehane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a02a08a04a01a04/Early-Celtic-Christianity-by-Brendan-Lehane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a02a08a04a05a05/Wild-Ireland-A-Traveller-s-Guide-by-Brendan-Lehane.pdfIn PDF document text