Malicious PDF — malware analysis report

Static analysis result for SHA-256 11974e4a070e27c2…

MALICIOUS

PDF

18.0 KB Created: 2019-05-01 19:27:54 +01:00 Authoring application: mPDF 5.7
MD5: bbb9a137105d6d661d063d2f152897cb SHA-1: 19c438b252d1c68466c67eb415a1e9d4c1e9defe SHA-256: 11974e4a070e27c2c9f8c4f8ad5fe61fa9c6d84a52741cd3a50774b2781321ae
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently flagged as benign, the sheer volume and the heuristic firing indicate a malicious intent, likely for SEO manipulation or to redirect users to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/7099092096093091/Mikhail-Bulgakov-Mikhail-Bulgakov-Bibliography-Bulgakov-Museum-in-Moscow-Mikhail-Bulgakov-Museum-by-Books-LLC.pdf
    • http://loaminoo.linkpc.net/7099092097095099/Moli-re-or-The-Cabal-of-Hypocrites-and-Don-Quixote-Two-Plays-by-Mikhail-Bulgakov-by-Mikhail-Bulgakov.pdf
    • http://loaminoo.linkpc.net/7099092097095096/Is-Comrade-Bulgakov-Dead-Mikhail-Bulgakov-at-the-Moscow-Art-Theatre-by-A-M-Smelianskii.pdf
    • http://loaminoo.linkpc.net/7099092095092094/Beg-Flight-by-Mikhail-Bulgakov.pdf
    • http://loaminoo.linkpc.net/3090095095093094/The-Heart-of-a-Dog-by-Mikhail-Bulgakov.pdf
    • http://loaminoo.linkpc.net/2095093097095092/The-Fatal-Eggs-by-Mikhail-Bulgakov.pdf
    • http://loaminoo.linkpc.net/3094093099090092/The-Fatal-Eggs-by-Mikhail-Bulgakov.pdf
    • http://loaminoo.linkpc.net/3091096096094092/--by-Mikhail-Bulgakov.pdf
    • http://loaminoo.linkpc.net/3097091097094092/The-Fatal-Eggs-by-Mikhail-Bulgakov.pdf
    • http://loaminoo.linkpc.net/7099092094099096/Notes-on-the-Cuff-and-Other-Stories-by-Mikhail-Bulgakov.pdf
    • http://loaminoo.linkpc.net/1093098094091098/A-Young-Doctor-s-Notebook-by-Mikhail-Bulgakov.pdf
    • http://loaminoo.linkpc.net/7099092096092097/Mikhail-Bulgakov-Life-and-Interpretations-by-A-C-Wright.pdf
    • http://loaminoo.linkpc.net/9097091099095093/S-ddeutsche-Zeitung-eBibliothek-Die-Kriegsromane-Die-wei-e-Garde-Die-Stalinorgel-Sara-und-Serafina-1948-Roman-Die-Abenteuer-des-braven-Soldaten-Schwejk-by-Mikhail-Bulgakov.pdf
    • http://loaminoo.linkpc.net/1090093094090096097/The-Master-and-Margarita-A-Critical-Companion-by-Laura-Weeks.pdf
    • http://loaminoo.linkpc.net/3094094091098097/Mikhail-Kuzmin-Selected-Writings-by-Mikhail-Kuzmin.pdf
    • http://loaminoo.linkpc.net/3099092093091094/Master-of-Wisdom-Writings-of-the-Buddhist-Master-Nagarjuna-by-Christian-Lindtner.pdf
    • http://loaminoo.linkpc.net/4098090094097093/Miria-Becomes-His---Owned-by-the-Master-Book-One-A-BDSM-Master-Slave-Romance-by-Casey-Cane.pdf
    • http://loaminoo.linkpc.net/7099092095097099/Bulgakov-Moliere-by-Charles-Duncombe.pdf
    • http://loaminoo.linkpc.net/7099092095093099/The-Bride-of-the-Lamb-by-Sergius-Bulgakov.pdf
    • http://loaminoo.linkpc.net/5098097091095/Mountain-Dog-by-Margarita-Engle.pdf

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