Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d80d8348020bc82…

MALICIOUS

PDF

21.4 KB Created: 2019-05-02 03:24:40 +01:00 Authoring application: mPDF 5.7
MD5: 302b919696f9503861b4e32639401227 SHA-1: 5a82c8634d8865dcd4fdb2eb71d15c1d9ad55587 SHA-256: 2d80d8348020bc82870302a725f7fdc695a20d01fecc10b9b4901d90c6fd5e92
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. While many of these links point to benign-looking book titles, the sheer volume and the use of a dynamic DNS hostname suggest a link farm intended to manipulate search engine results or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of its specific intent beyond link distribution.

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
    • http://loaminoo.linkpc.net/2099093095090/American-Character-The-Curious-Life-of-Charles-Fletcher-Lummis-by-Mark-Thompson.pdf
    • http://loaminoo.linkpc.net/2098092093092/A-Revolutionary-People-at-War-The-Continental-Army-and-American-Character-1775-1783-by-Charles-Royster.pdf
    • http://loaminoo.linkpc.net/2095091099095092/The-American-Mind-An-Interpretation-of-American-Thought-amp-Character-Since-the-1880-s-by-Henry-Steele-Commager.pdf
    • http://loaminoo.linkpc.net/6093093096093/Surely-You-re-Joking-Mr-Feynman-Adventures-of-a-Curious-Character-by-Richard-Feynman.pdf
    • http://loaminoo.linkpc.net/1093098091097091/The-Bell-Curve-Intelligence-and-Class-Structure-in-American-Life-by-Charles-Murray.pdf
    • http://loaminoo.linkpc.net/4091094092092097/Character-Matters-Nine-Essential-Traits-You-Need-to-Succeed-by-Mark-Rutland.pdf
    • http://loaminoo.linkpc.net/3098093092095094/The-Curious-Incident-of-the-Dog-in-the-Night-Time-by-Mark-Haddon.pdf
    • http://loaminoo.linkpc.net/5090093097093095/The-Curious-Incident-of-the-Dog-in-the-Night-Time-by-Mark-Haddon.pdf
    • http://loaminoo.linkpc.net/2096099096094094/The-Curious-Incident-of-the-Dog-In-the-Night-time-by-Mark-Haddon.pdf
    • http://loaminoo.linkpc.net/2099095095093099/The-Curious-Incident-of-the-Dog-in-the-Night-time-by-Mark-Haddon.pdf
    • http://loaminoo.linkpc.net/6090097095093099/The-Curious-Incident-of-the-Dog-in-the-Night-Time-by-Mark-Haddon.pdf
    • http://loaminoo.linkpc.net/3093094093091099/William-the-Curious-Knight-of-the-Water-Lilies-by-Charles-Santore.pdf
    • http://loaminoo.linkpc.net/5093098096095/The-Curious-Case-of-the-Clockwork-Man-Burton-amp-Swinburne-2-by-Mark-Hodder.pdf
    • http://loaminoo.linkpc.net/8091098097090097/The-Prince-and-the-Pauper-Mandarin-Companion-Graded-Readers-Level-1-Simplified-Character-Edition-by-Mark-Twain.pdf
    • http://loaminoo.linkpc.net/1091098095095097/American-Character-A-History-of-the-Epic-Struggle-Between-Individual-Liberty-and-the-Common-Good-by-Colin-Woodard.pdf
    • http://loaminoo.linkpc.net/9096097093098/Dust-by-Mark--Thompson.pdf
    • http://loaminoo.linkpc.net/1091091094094092/The-Black-Image-in-the-White-Mind-The-Debate-on-Afro-American-Character-and-Destiny-1817-1914-by-George-M-Fredrickson.pdf
    • http://loaminoo.linkpc.net/1099097093091/Gay-Body-A-Journey-Through-Shadow-to-Self-by-Mark-Thompson.pdf
    • http://loaminoo.linkpc.net/4092091099093090/Creating-Character-Arcs-Workbook-The-Writer-s-Reference-to-Exceptional-Character-Development-and-Creative-Writing-Helping-Writers-Become-Authors-Book-8-by-K-M-Weiland.pdf
    • http://loaminoo.linkpc.net/8093098095091/Just-Remember-to-Breathe-Thompson-Sisters-3-by-Charles-Sheehan-Miles.pdf