Malicious PDF — malware analysis report

Static analysis result for SHA-256 79826f942f102bd2…

MALICIOUS

PDF

17.4 KB Created: 2019-04-30 03:51:34 +01:00 Authoring application: mPDF 5.7
MD5: a344bbca7567811bb4689c09e20a396d SHA-1: 2065546d1695a5edaec5608dcb7dce324ff35b13 SHA-256: 79826f942f102bd2f9eab271d271af9157bcd4a3babe9ccceb9d80bdfa670155
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, hosted on the dynamic DNS domain 'loaminoo.linkpc.net'. This is indicative of a link farm or SEO manipulation tactic, which can be used to distribute malicious content or improve the ranking of malicious sites. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the specific lure. The ML classifier strongly flagged this PDF as malicious.

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/2099093092097092/Small-Change-Small-Change-1-by-Roan-Parrish.pdf
    • http://loaminoo.linkpc.net/2095094095099097/Windows-for-Rosemary-by-Marguerite-Vance.pdf
    • http://loaminoo.linkpc.net/2096093093094094/Half-a-Crown-Small-Change-3-by-Jo-Walton.pdf
    • http://loaminoo.linkpc.net/5090097090093094/Small-Change-Short-Stories-by-Ken-Barris.pdf
    • http://loaminoo.linkpc.net/1099092096091093/Invitation-to-the-Blues-Small-Change-2-by-Roan-Parrish.pdf
    • http://loaminoo.linkpc.net/4091096090095095/Invitation-to-the-Blues-Small-Change-2-by-Roan-Parrish.pdf
    • http://loaminoo.linkpc.net/3093090091095090/Invitation-to-the-Blues-Small-Change-2-by-Roan-Parrish.pdf
    • http://loaminoo.linkpc.net/7098093096093/10-Things-To-Change-Your-Life-Small-Steps-In-The-Right-Direction-by-Shawn-C-Harris.pdf
    • http://loaminoo.linkpc.net/4094096091097091/Small-Acts-of-Resistance-How-Courage-Tenacity-and-Ingenuity-Can-Change-the-World-by-Steve-Crawshaw.pdf
    • http://loaminoo.linkpc.net/4092097090092091/Say-Hey-The-Autobiography-of-Willie-Mays-by-Willie-Mays.pdf
    • http://loaminoo.linkpc.net/2092096092099/The-News-in-Small-Towns-Small-Town-Series-Book-1-by-Iza-Moreau.pdf
    • http://loaminoo.linkpc.net/7097090090096094/The-Small-Big-Small-Changes-That-Spark-Big-Influence-by-Steve-J-Martin.pdf
    • http://loaminoo.linkpc.net/7095097092099094/The-Worlds-of-Jack-Vance-by-Jack-Vance.pdf
    • http://loaminoo.linkpc.net/7098094098096/How-Successful-People-Think-Change-Your-Thinking-Change-Your-Life-by-John-C-Maxwell.pdf
    • http://loaminoo.linkpc.net/9096097093096/Designer-Mindset-Change-your-mind-Change-your-life-by-Gina-Carr-.pdf
    • http://loaminoo.linkpc.net/9092097093094097/The-Lose-Your-Belly-Diet-Change-Your-Gut-Change-Your-Life-by-Travis-Stork.pdf
    • http://loaminoo.linkpc.net/7091097099098090/Change-your-World-Awakening-to-the-Power-of-Truth---Beauty---Simplicity---Change-by-Jean-Maalouf.pdf
    • http://loaminoo.linkpc.net/6090099094090096/Change-Your-Words-Change-Your-Life-Understanding-the-Power-of-Every-Word-You-Speak-by-Joyce-Meyer.pdf
    • http://loaminoo.linkpc.net/7090094092096/In-the-Small-Small-Pond-by-Denise-Fleming.pdf
    • http://loaminoo.linkpc.net/1095096097091093/You-Are-WHY-You-Eat-Change-Your-Food-Attitude-Change-Your-Life-by-Ramani-Durvasula.pdf