Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8563a59e4162db…

MALICIOUS

PDF

21.3 KB Created: 2019-04-30 05:13:26 +01:00 Authoring application: mPDF 5.7
MD5: ade9a835186537d3308781586078b320 SHA-1: 7dba75901e853e6f25c8e6ae2184ba2a31ff2971 SHA-256: 8b8563a59e4162db762d5a701ffc1db07ad11288bdd769e54e775032f56e6e6b
130 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a heuristic firing for a link farm, indicating a large number of external links embedded within the document. The document body, though heavily obfuscated, contains numerous URLs pointing to what appear to be book downloads. The presence of an eval() call in a PDF stream suggests potential for malicious code execution, though the exact payload is not discernible. The primary attack pattern appears to be SEO manipulation or a deceptive lure to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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.
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
  • 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/1090098094093098091/Grand-Theories-and-Everyday-Beliefs-Science-Philosophy-and-their-Histories-by-Wallace-Matson.pdf
    • http://loaminoo.linkpc.net/1090098094096090095/A-New-History-of-Philosophy-Ancient-and-Medieval-A-New-History-of-Philosophy-1-by-Wallace-Matson.pdf
    • http://loaminoo.linkpc.net/9092090092097092/Philosophy-of-Science-The-Link-Between-Science-and-Philosophy-by-Philipp-Frank.pdf
    • http://loaminoo.linkpc.net/4094097092097090/Higher-Speculations-Grand-Theories-and-Failed-Revolutions-in-Physics-and-Cosmology-by-Helge-Kragh.pdf
    • http://loaminoo.linkpc.net/5091099095098095/Astonish-Yourself-101-Experiments-in-the-Philosophy-of-Everyday-Life-by-Roger-Pol-Droit.pdf
    • http://loaminoo.linkpc.net/5097092093092/The-Science-of-Success-The-Secret-of-Getting-What-You-Want-WITH-The-Science-of-Getting-Rich-AND-The-Secret-by-Wallace-D-Wattles.pdf
    • http://loaminoo.linkpc.net/6092090091096091/Freedom-and-the-Self-Essays-on-the-Philosophy-of-David-Foster-Wallace-by-Steven-M-Cahn.pdf
    • http://loaminoo.linkpc.net/1090098094093090097/The-Mist-of-Matson-Creek-Matson-Creek-Series-Book-1-by-Beverly-Kovatch.pdf
    • http://loaminoo.linkpc.net/9099098096095091/The-Science-of-Getting-Rich-by-Wallace-D-Wattles.pdf
    • http://loaminoo.linkpc.net/8096092097092090/Science-of-Getting-Rich-the-by-Wallace-D-Wattles.pdf
    • http://loaminoo.linkpc.net/4094099091092090/How-to-Dunk-a-Doughnut-The-Science-Of-Everyday-Life-by-Len-Fisher.pdf
    • http://loaminoo.linkpc.net/4094097098097095/The-Perfect-Swarm-The-Science-of-Complexity-in-Everyday-Life-by-Len-Fisher.pdf
    • http://loaminoo.linkpc.net/9090091096091091/Die-Wissenschaft-vom-Reichwerden-The-Science-of-Getting-Rich-by-Wallace-D-Wattles.pdf
    • http://loaminoo.linkpc.net/4093099093096096/The-Science-Of-Getting-Rich-Mind-into-Money-by-Wallace-D-Wattles.pdf
    • http://loaminoo.linkpc.net/1091095092090090099/The-Science-of-Getting-Rich-How-to-Think-How-to-Act-and-What-to-Do-to-Harness-Your-Creative-Potential-by-Wallace-D-Wattles.pdf
    • http://loaminoo.linkpc.net/8096090096092096/Why-Do-Ice-Cubes-Float-Questions-and-Answers-about-the-Science-of-Everyday-Materials-by-Thomas-Canavan-Jr-.pdf
    • http://loaminoo.linkpc.net/8096096096094098/Empire-of-Chance-How-Probability-Changed-Science-and-Everyday-Life-by-Gerd-Gigerenzer.pdf
    • http://loaminoo.linkpc.net/6094090096091/Living-Deeply-The-Art-Science-of-Transformation-in-Everyday-Life-by-Marilyn-Mandala-Schlitz.pdf
    • http://loaminoo.linkpc.net/4099098097099/The-Event-in-Science-History-Philosophy-amp-Art-by-Yeshayahu-Ben-Aharon.pdf
    • http://loaminoo.linkpc.net/2093091092090098/Beyond-the-Hoax-Science-Philosophy-and-Culture-by-Alan-Sokal.pdf
    • http://loaminoo.linkpc.net/5097092093092/The-Science-of-Success-T

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