Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e828edf78df520a…

MALICIOUS

PDF

17.2 KB Created: 2019-04-30 01:41:57 +01:00 Authoring application: mPDF 5.7
MD5: e59acd8c21ccc35ce1eee23299941bc3 SHA-1: 09bfbd50b5a4e3116d027e801f88b8252e16d0fe SHA-256: 3e828edf78df520a3ddfc2621971a61de9c7b77ab4c90976805a27adb3090180
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded links to external PDF files, indicative of a link farm or SEO poisoning attempt. While no scripts were extracted, the heuristic 'PDF_SEO_LINK_FARM' strongly suggests the document's purpose is to distribute malicious content or manipulate search engine results. The embedded URLs, though currently classified as benign, are the primary indicators of this malicious activity.

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.linkpc.net/1091099096091090093/Muhyo-Roji-s-Bureau-of-Supernatural-Investigation-Vol-15-by-Yoshiyuki-Nishi.pdf
    • http://loaminoo.linkpc.net/1091099096090099092/Muhyo-Roji-s-Bureau-of-Supernatural-Investigation-Vol-9-by-Yoshiyuki-Nishi.pdf
    • http://loaminoo.linkpc.net/1091099096090096096/Muhyo-Roji-s-Bureau-of-Supernatural-Investigation-Vol-4-by-Yoshiyuki-Nishi.pdf
    • http://loaminoo.linkpc.net/1091099096091090098/Muhyo-Roji-s-Bureau-of-Supernatural-Investigation-Vol-14-by-Yoshiyuki-Nishi.pdf
    • http://loaminoo.linkpc.net/1091099096090096097/Muhyo-Roji-s-Bureau-of-Supernatural-Investigation-Vol-18-by-Yoshiyuki-Nishi.pdf
    • http://loaminoo.linkpc.net/1091099096090096098/Muhyo-Roji-s-Bureau-of-Supernatural-Investigation-Vol-6-by-Yoshiyuki-Nishi.pdf
    • http://loaminoo.linkpc.net/1091099096090096099/Muhyo-Roji-s-Bureau-of-Supernatural-Investigation-Vol-5-by-Yoshiyuki-Nishi.pdf
    • http://loaminoo.linkpc.net/1091099096090096092/Muhyo-amp-Roji-s-Bureau-of-Supernatural-Investigation-Vol-2-Muhyo-and-Roji-s-Bureau-of-Supernatural-Investigation-by-Yoshiyuki-Nishi.pdf
    • http://loaminoo.linkpc.net/3091099095095093/WBI2-Witches-Bureau-of-Investigation-2-by-Richard-Capwell.pdf
    • http://loaminoo.linkpc.net/4091095099099092/The-Cointelpro-Papers-Documents-from-the-Federal-Bureau-of-Investigation-s-Secret-Wars-Against-Dissent-in-the-United-States-by-Ward-Churchill.pdf
    • http://loaminoo.linkpc.net/1099094095093099/Supernatural-Highway-Ghost-of-a-Chance-Supernatural-Highway-1-by-Molly-Colton.pdf
    • http://loaminoo.linkpc.net/7094094099095090/Lose-a-Kilo-a-Week-by-Nishi-Grover.pdf
    • http://loaminoo.linkpc.net/5091094092091099/--Nishi-no-majo-ga-shinda-by-Kaho-Nashiki.pdf
    • http://loaminoo.linkpc.net/1094096090093097/The-Divinity-Bureau-by-Tess-Alley.pdf
    • http://loaminoo.linkpc.net/1091095098095093098/Amerikanischer-Eisenbau-in-Bureau-Und-Werkstatt-by-F-W-Dencer.pdf
    • http://loaminoo.linkpc.net/4094098097091092/Shiver-Bureau-Welcome-to-London-Vol-1-by-Walter-Ostlie.pdf
    • http://loaminoo.linkpc.net/1091099096091090092/Escalation-by-Yoshiyuki-Tomino.pdf
    • http://loaminoo.linkpc.net/1091099096090096094/Awakening-by-Yoshiyuki-Tomino.pdf
    • http://loaminoo.linkpc.net/1098095096094092/The-Adjustment-Bureau-and-Other-Classic-Stories-by-Philip-K-Dick.pdf
    • http://loaminoo.linkpc.net/4098095095093093/The-Dark-Room-by-Junnosuke-Yoshiyuki.pdf
    • http://loaminoo.linkpc.net/1091099096090096092/Muhyo-amp-Roji-s-Bureau-of-Supernatural-Investigation-Vol-2-Muhyo-and-Roji-s-Bureau-of-Supernatural-Investigation-by-Yoshiyuki-Nishi.pd