Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b9cb4c7a06009f5…

MALICIOUS

PDF

14.8 KB Created: 2019-05-07 05:46:07 +01:00 Authoring application: mPDF 5.7
MD5: 09215a391d205c4b2319bb75264fbe5b SHA-1: c7d4e1c440710a275908deb9717f91ce8d3f118a SHA-256: 7b9cb4c7a06009f56adefad6c4490fafda2ae4f92d9f9c246ff9c43cb23e99cf
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which suggests a link farm or redirection tactic. The ML classifier also flagged the PDF as malicious with high confidence. No scripts were extracted from this sample. The primary attack pattern involves luring the user to click on these links, likely to download further malicious content or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/9096097099094092/Arthur-Conan-Doyle-Sherlock-Holmes---Die-Romane-Eine-Studie-in-Scharlachrot---Das-Zeichen-der-Vier---Der-Hund-der-Baskervilles---Das-Tal-des-Grauens-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/8090093098092091/The-Sherlock-Holmes-Collection-by-Arthur-Conan-Doyle-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/7096092097095097/The-Sign-of-the-Four-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/4095090099098098/The-Man-With-the-Twisted-Lip-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/7093092095094090/Sir-Nigel-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/1090092098092099/The-Sign-of-Four-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/8095093090095098/The-Sign-of-the-Four-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/6092092095098099/The-Sign-of-Four-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/7090095092095096/The-Hound-of-the-Baskervilles-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/1093091098097099/Round-the-Red-Lamp-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/8096093093094098/The-Hound-of-the-Baskervilles-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/5092095092097096/The-Hound-of-the-Baskervilles-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/3098092098095095/The-Lost-World-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/5095092090097093/The-Hound-Of-The-Baskervilles-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/5090093095094094/A-Study-in-Scarlet-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/5090092098094096/The-Adventure-of-the-Cardboard-Box-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/8094095094097/The-Hound-of-the-Baskervilles-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/2098098092093091/Tales-of-Unease-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/4098092095098090/A-Study-in-Scarlet-by-Arthur-Conan-Doyle.pdf
    • http://loaminoo.linkpc.net/3099090091095095/The-Hound-of-the-Baskervilles-by-Arthur-Conan-Doyle.pdf

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