Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b37af03eb1ace75…

MALICIOUS

PDF

17.4 KB Created: 2019-04-30 02:43:01 +01:00 Authoring application: mPDF 5.7
MD5: e142368b2a71f2f800a06da202e2a728 SHA-1: 7ae546a085932f5704126d6d855fa29fa712523d SHA-256: 4b37af03eb1ace750353df1b5bb6288a793b9aaade05b8f1365914aef6b8412e
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, constituting a link farm. This heuristic, combined with the ML classifier flagging the document as malicious, suggests the intent is to drive traffic to these external resources. While the URLs themselves are currently marked as benign, the sheer volume and the PDF structure indicate a malicious intent to potentially distribute further content or engage in SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/4098099094092/The-Darwin-Awards-Evolution-in-Action-Darwin-Awards-1-by-Wendy-Northcutt.pdf
    • http://loaminoo.linkpc.net/6095093094097093/The-Darwin-Awards-II-Unnatural-Selection-Darwin-Awards-2-by-Wendy-Northcutt.pdf
    • http://loaminoo.linkpc.net/2091095090099094/The-Darwin-Awards-Next-Evolution-Chlorinating-the-Gene-Pool-by-Wendy-Northcutt.pdf
    • http://loaminoo.linkpc.net/8094090098097096/Hey-Darwin-at-the-Zu-Daily-Strips-Volume-1-Darwin-amp-Co-and-Stoopid-Zu-Cartoons-by-Ron-Ruelle.pdf
    • http://loaminoo.linkpc.net/7099097095096/Darwin-s-Children-Darwin-s-Radio-2-by-Greg-Bear.pdf
    • http://loaminoo.linkpc.net/3099094095097090/Saving-Darwin-How-to-Be-a-Christian-and-Believe-in-Evolution-by-Karl-W-Giberson.pdf
    • http://loaminoo.linkpc.net/8091098090098095/Discoveries-Darwin-and-the-Science-of-Evolution-by-Patrick-Tort.pdf
    • http://loaminoo.linkpc.net/1095092095095/Life-In-Darwin-s-Universe-Evolution-And-The-Cosmos-by-Gene-Bylinsky.pdf
    • http://loaminoo.linkpc.net/8092098095095094/Evolution-Selected-Letters-1860-1870-by-Charles-Darwin.pdf
    • http://loaminoo.linkpc.net/3096091098095090/Creation-Darwin-His-Daughter-amp-Human-Evolution-by-Randal-Keynes.pdf
    • http://loaminoo.linkpc.net/5092091092099/Darwin-s-Black-Box-The-Biochemical-Challenge-to-Evolution-by-Michael-J-Behe.pdf
    • http://loaminoo.linkpc.net/9098092094091093/On-Evolution-The-Development-of-the-Theory-of-Natural-Selection-by-Charles-Darwin.pdf
    • http://loaminoo.linkpc.net/1095090098091/Darwin-s-Dangerous-Idea-Evolution-and-the-Meanings-of-Life-by-Daniel-C-Dennett.pdf
    • http://loaminoo.linkpc.net/4092095098095097/Darwin-s-Armada-Four-Voyages-and-the-Battle-for-the-Theory-of-Evolution-by-Iain-McCalman.pdf
    • http://loaminoo.linkpc.net/1099091092099091/Evolution-s-Captain-The-Dark-Fate-of-the-Man-Who-Sailed-Charles-Darwin-Around-the-World-by-Peter-Nichols.pdf
    • http://loaminoo.linkpc.net/5098098092090096/On-The-Origin-Of-Species-By-Charles-Darwin---Illustrated-by-Charles-Darwin.pdf
    • http://loaminoo.linkpc.net/2094098099097/Darwin-s-Radio-Darwin-s-Radio-1-by-Greg-Bear.pdf
    • http://loaminoo.linkpc.net/1091099090093092091/The-Autobiography-of-Charles-Darwin-1809-82-by-Charles-Darwin.pdf
    • http://loaminoo.linkpc.net/2097096095090094/The-Now-Awards-The-Best-Innovative-Writing-by-Robert-Archambeau.pdf
    • http://loaminoo.linkpc.net/2090097097098096/Nebula-Awards-Showcase-2013-by-Catherine-Asaro.pdf
    • http://loaminoo.linkpc.net/1095092095095/Life-In-Darwin-s-Universe-Evol