Malicious PDF — malware analysis report

Static analysis result for SHA-256 23d0b92cf2fce255…

MALICIOUS

PDF

15.2 KB Created: 2019-04-30 04:06:08 +01:00 Authoring application: mPDF 5.7
MD5: 32413c66ff7937504cf864ae6e2c1a76 SHA-1: f94dee21fc88849e25b73aa98fdb88679fb98fd5 SHA-256: 23d0b92cf2fce2552822abcb8cb8d33fae00a5c5209596448a0c8d205a423940
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded links to external PDF files, hosted on the loaminoo.linkpc.net domain. This technique is often used for SEO poisoning or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/6099094098098099/Hard-to-Forget-Hard-to-Resist-0-5-by-Shanora-Williams.pdf
    • http://loaminoo.linkpc.net/1090095093098092095/How-to-Forgive-When-It-s-Hard-to-Forget-by-Joy-Haney.pdf
    • http://loaminoo.linkpc.net/1098090095097096/Cherry-Ames-Senior-Nurse-Cherry-Ames-2-by-Helen-Wells.pdf
    • http://loaminoo.linkpc.net/1098090096096096/Cherry-Ames-Visiting-Nurse-Cherry-Ames-8-by-Helen-Wells.pdf
    • http://loaminoo.linkpc.net/1098090098099096/Cherry-Ames-Army-Nurse-Cherry-Ames-3-by-Helen-Wells.pdf
    • http://loaminoo.linkpc.net/6091096090092099/Cherry-Ames-Camp-Nurse-Cherry-Ames-19-by-Helen-Wells.pdf
    • http://loaminoo.linkpc.net/4091099097099099/Cold-Hard-Ride-Hard-Land-to-Rule-Trilogy-2-by-Anthony-Whitt.pdf
    • http://loaminoo.linkpc.net/9096098096099097/Hard-Style-Abs-Hit-Hard-Lift-Heavy-Look-the-Part-by-Pavel-Tsatsouline.pdf
    • http://loaminoo.linkpc.net/9094097090092097/Felon-Fitness-How-to-Get-a-Hard-Body-Without-Doing-Hard-Time-by-William-S-Kroger.pdf
    • http://loaminoo.linkpc.net/4092090095098093/Into-The-Hard-Hills-Hard-Land-To-Rule-Trilogy-3-by-Anthony-Whitt.pdf
    • http://loaminoo.linkpc.net/9096098098096090/Beyond-Crunches-Hard-Science-Hard-ABS-by-Pavel-Tsatsouline.pdf
    • http://loaminoo.linkpc.net/3093098096095090/Rebel-Hard-Hard-Play-2-by-Nalini-Singh.pdf
    • http://loaminoo.linkpc.net/1094095099099093/Hard-to-Stop-Hard-Targets-3-by-Wendy-Byrne.pdf
    • http://loaminoo.linkpc.net/8095098095/Forget-You-Ethan-Forget-You-Ethan-1-by-Whitney-G-.pdf
    • http://loaminoo.linkpc.net/7090096093099091/EMPIRE-OF-SAND-The-Ehrenberg-Quartzsite-Parker-Triangle-Myths-Mistakes-Hard-Times-and-a-Few-Hard-Cases-by-Donald-Chaput.pdf
    • http://loaminoo.linkpc.net/1099097092098097/Hard-Ever-After-Hard-Ink-4-6-by-Laura-Kaye.pdf
    • http://loaminoo.linkpc.net/4095092099099093/Hard-to-Come-By-Hard-Ink-3-by-Laura-Kaye.pdf
    • http://loaminoo.linkpc.net/3099096099094091/Hard-as-You-Can-Hard-Ink-2-by-Laura-Kaye.pdf
    • http://loaminoo.linkpc.net/1097096099097097/Hard-as-It-Gets-Hard-Ink-1-by-Laura-Kaye.pdf
    • http://loaminoo.linkpc.net/1091093093/Hard-to-Let-Go-Hard-Ink-4-by-Laura-Kaye.pdf

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