Malicious PDF — malware analysis report

Static analysis result for SHA-256 50da1458132dcfdb…

MALICIOUS

PDF

18.0 KB Created: 2019-05-02 18:31:31 +01:00 Authoring application: mPDF 5.7
MD5: 1aa92c40dbc8ae6ce3911dc4aa4f76b3 SHA-1: b70d5d272ae8a395bfbc7adc24ea98b96f3ab882 SHA-256: 50da1458132dcfdbb4ea78550e8acfbdef7ea4184676d58e9ee7e59e9bfe1445
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection tactic. While the ML classifier strongly indicated maliciousness, the specific payload or ultimate intent beyond link distribution is not clear from the available evidence. The embedded URLs are likely used to lure victims to malicious sites or to manipulate search engine rankings.

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
    • http://loaminoo.linkpc.net/3091096096094092/--by-Mikhail-B

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