Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8f35e5debbc46f9…

MALICIOUS

PDF

20.8 KB Created: 2019-04-30 05:37:08 +01:00 Authoring application: mPDF 5.7
MD5: 7d3893bc2b9b4a6e685df37f8af7d821 SHA-1: 4c6b019f232a0da035de5a5773643a8c304620d3 SHA-256: d8f35e5debbc46f95d57a81c20f2f420e367cf85171d431b7cc23e05ac2ad686
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a large number of embedded links to external PDF documents, identified by the PDF_SEO_LINK_FARM heuristic. While the individual links are marked as benign, the sheer volume and structure suggest a malicious intent, likely to manipulate search engine results or redirect users to potentially harmful content. No scripts were extracted from this sample. The attack pattern is inferred from the link farm heuristic.

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/1098095099090/The-Floppy-Sleep-Game-Book-A-Proven-4--Week-Plan-to-Get-Your-Child-to-Sleep-by-Patti-Teel.pdf
    • http://loaminoo.linkpc.net/3099099098099093/Good-Night-Sleep-Tight-The-Sleep-Lady-s-Gentle-Guide-to-Helping-Your-Child-Go-to-Sleep-Stay-Asleep-and-Wake-Up-Happy-by-Kim-West.pdf
    • http://loaminoo.linkpc.net/7090090094094098/Twelve-Hours-Sleep-by-Twelve-Weeks-Old-A-Step-By-Step-Plan-for-Baby-Sleep-Success-by-Suzy-Giordano.pdf
    • http://loaminoo.linkpc.net/4094097098093096/Why-We-Sleep-Unlocking-the-Power-of-Sleep-and-Dreams-by-Matthew-Walker.pdf
    • http://loaminoo.linkpc.net/3099094099097099/Sleep-Soundly-Every-Night-Feel-Fantastic-Every-Day-A-Doctor-s-Guide-to-Solving-Your-Sleep-Problems-by-Robert-S-Rosenberg.pdf
    • http://loaminoo.linkpc.net/3097095093090090/Stop-Losing-Sleep-Establish-Healthy-Sleep-Patterns-to-Improve-your-Health-and-Energy-by-Kyle-Richards.pdf
    • http://loaminoo.linkpc.net/3093098098090090/The-Sleep-Solution-why-your-sleep-is-broken-and-how-to-fix-it-by-W-Chris-Winter.pdf
    • http://loaminoo.linkpc.net/5091099095090097/Sleep-Big-Bear-Sleep-by-Maureen-Wright.pdf
    • http://loaminoo.linkpc.net/9091093095097/Sleep-Baby-Sleep-by-Teri-Weidner.pdf
    • http://loaminoo.linkpc.net/1091096095094098092/The-4-Pillar-Plan-How-to-Relax-Eat-Move-Sleep-Your-Way-to-a-Longer-Healthier-Life-by-Rangan-Chatterjee.pdf
    • http://loaminoo.linkpc.net/6090092098096093/The-Foster-Child-a-sleep-with-the-lights-on-thriller-by-Jenny-Blackhurst.pdf
    • http://loaminoo.linkpc.net/7094097097095/Healthy-Sleep-Habits-Happy-Child-by-Marc-Weissbluth.pdf
    • http://loaminoo.linkpc.net/5091093093095/The-90-Day-Plan-to-Marketing-Your-Book-A-Powerful-Day-to-Day-Proven-Strategy-to-Implement-Maximize-Exposure-and-Explode-Sales-of-Your-Book-by-Melissa-Se.pdf
    • http://loaminoo.linkpc.net/5092096093096094/The-Book-of-the-Sandman-and-the-Alphabet-of-Sleep-by-Rien-Poortvliet.pdf
    • http://loaminoo.linkpc.net/9097098099096095/When-Do-Fish-Sleep-An-Imponderables-Book-by-David-Feldman.pdf
    • http://loaminoo.linkpc.net/3090093093099091/Cry-Myself-to-Sleep-by-Joe-Peters.pdf
    • http://loaminoo.linkpc.net/7097097090099090/Before-I-Go-To-Sleep-by-S-J-Watson.pdf
    • http://loaminoo.linkpc.net/6098097092090096/Before-I-Go-To-Sleep-by-S-J-Watson.pdf
    • http://loaminoo.linkpc.net/4095099096094093/If-Only-the-Sea-Could-Sleep-by-Adonis.pdf
    • http://loaminoo.linkpc.net/2090091098091095/The-House-of-Sleep-by-Jonathan-Coe.pdf
    • http://loaminoo.linkpc.net/3097095093090090/Stop-Losing-Sleep-Establish-Healthy-Sleep-Patterns-