Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a3bc0c37a038760…

MALICIOUS

PDF

14.3 KB Created: 2019-05-02 21:07:42 +01:00 Authoring application: mPDF 5.7
MD5: e488ccb8c5c1e3200209162399b77ba5 SHA-1: 9d5415cf8cd0099ba52194ec0fdfdc8715a2d8aa SHA-256: 7a3bc0c37a03876078f1f0918c5ac6f0e80f4e12af15cd6126043f56203f21df
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. This heuristic, combined with the ML classifier, indicates a malicious intent to redirect users to potentially harmful websites. No scripts were extracted, and the document body was heavily obfuscated, preventing further analysis of specific content.

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/3099096095096099/The-Oceans-between-Stars-Chronicle-of-the-Dark-Star-2-by-Kevin-Emerson.pdf
    • http://loaminoo.linkpc.net/3098092090094096/Last-Day-on-Mars-Chronicle-of-the-Dark-Star-1-by-Kevin-Emerson.pdf
    • http://loaminoo.linkpc.net/2097096099094097/The-Dark-Shore-The-Atlanteans-2-by-Kevin-Emerson.pdf
    • http://loaminoo.linkpc.net/1092095093095098/The-Dark-Shore-The-Atlanteans-2-by-Kevin-Emerson.pdf
    • http://loaminoo.linkpc.net/1092090096096097/Encore-to-an-Empty-Room-by-Kevin-Emerson.pdf
    • http://loaminoo.linkpc.net/1097090092096093/Stars-Are-Stars-by-Kevin-Sampson.pdf
    • http://loaminoo.linkpc.net/3092099094094/Ardency-a-Chronicle-of-the-Amistad-Rebels-by-Kevin-Young.pdf
    • http://loaminoo.linkpc.net/1098090092095093/Exile-Exile-1-by-Kevin-Emerson.pdf
    • http://loaminoo.linkpc.net/4095097099092095/To-Catch-a-Falling-Star-Crossing-Stars-2-by-L-Duarte.pdf
    • http://loaminoo.linkpc.net/2098098096090/The-Fallen-Stars-The-Star-Child-2-by-Stephanie-Keyes.pdf
    • http://loaminoo.linkpc.net/1091098097091094/Falling-Stars-Star-Sequence-3-by-Jettie-Woodruff.pdf
    • http://loaminoo.linkpc.net/2095098098095093/The-Portable-Emerson-by-Ralph-Waldo-Emerson.pdf
    • http://loaminoo.linkpc.net/8091099096090092/Essential-Emerson-CD-by-Ralph-Waldo-Emerson.pdf
    • http://loaminoo.linkpc.net/9091099098098094/Star-Wars-Flucht-ins-Ungewisse-by-Kevin-J-Anderson.pdf
    • http://loaminoo.linkpc.net/3093094095096090/Wagon-Train-to-the-Stars-Star-Trek-New-Earth-1-by-Diane-Carey.pdf
    • http://loaminoo.linkpc.net/3091091095096091/Kevin-the-Star-Striker-The-Wild-Soccer-Bunch-1-by-Joachim-Masannek.pdf
    • http://loaminoo.linkpc.net/1090095098091099/Our-Dark-Stars-by-Audrey-Grey.pdf
    • http://loaminoo.linkpc.net/2092099093094095/The-Stars-Are-Dark-by-Peter-Cheyney.pdf
    • http://loaminoo.linkpc.net/8098090090092/Diversity-Alliance-Star-Wars-Young-Jedi-Knights-8-by-Kevin-J-Anderson.pdf
    • http://loaminoo.linkpc.net/1092097098093097/Duel-in-the-Dark-Blood-on-the-Stars-1-by-Jay-Allan.pdf

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