Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dfa8645315c4e5d…

MALICIOUS

PDF

14.0 KB Created: 2019-04-30 02:02:48 +01:00 Authoring application: mPDF 5.7
MD5: ae80ad09e331f9c54453c88c3391e5ef SHA-1: e060abbba232c9d60c2d9f40234304d54ac4c3a4 SHA-256: 4dfa8645315c4e5dfa283279ece9848c9a17871f399e43981e091befe8c2d15f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded URLs pointing to external PDF documents, characteristic of a link farm. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure. The primary attack pattern observed is the distribution of malicious links.

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/1097093098097092/Broken-Hearts-Kaleigh-s-Revenge-Broken-Wings-2-by-Sandra-Love.pdf
    • http://loaminoo.linkpc.net/2099097092093096/Broken-Broken-Wings-1-by-Sandra-Love.pdf
    • http://loaminoo.linkpc.net/3090098097098095/Broken-Broken-Wings-1-by-Sandra-Love.pdf
    • http://loaminoo.linkpc.net/1097093098093098/Broken-Wings-Broken-1-by-Erika-Ashby.pdf
    • http://loaminoo.linkpc.net/1092095090099091/Broken-Wings-Broken-3-by-K-S-Ruff.pdf
    • http://loaminoo.linkpc.net/4098090090094099/Broken-Wings-Lost-Boys-and-Love-Letters-4-by-Bethany-Brown.pdf
    • http://loaminoo.linkpc.net/2094094090097097/Broken-Wings-by-D-G-Torrens.pdf
    • http://loaminoo.linkpc.net/3092095093094091/Broken-Wings-by-Carla-Stewart.pdf
    • http://loaminoo.linkpc.net/4098096099094092/Falling-Girl-With-Broken-Wings-1-by-J-Bennett.pdf
    • http://loaminoo.linkpc.net/3099095094098093/On-Broken-Wings-Wild-Aces-3-by-Chanel-Cleeton.pdf
    • http://loaminoo.linkpc.net/4097091096091094/Broken-Wings-Chronicles-of-Brydon-1-by-Lora-Leigh.pdf
    • http://loaminoo.linkpc.net/6093091094094099/Broken-Wings-A-Flight-Attendant-s-Journey-by-Nattanya-Andersen.pdf
    • http://loaminoo.linkpc.net/3099091099091099/Broken-Wings-Dark-Angel-Chronicles-2-by-Melanie-Nilles.pdf
    • http://loaminoo.linkpc.net/9093090093092093/The-Broken-Wings-Al-ajnahat-Almotaksera-Gebrochene-Fl-gel-by-Kahlil-Gibran.pdf
    • http://loaminoo.linkpc.net/3094099097097096/Beneath-the-Broken-Moon-Part-One-Broken-1-by-Sarah-M-kel-.pdf
    • http://loaminoo.linkpc.net/3094099097096096/Beneath-the-Broken-Moon-Part-Three-Broken-3-by-Sarah-M-kel-.pdf
    • http://loaminoo.linkpc.net/6092094097094091/Defiant-A-Broken-Body-Is-Not-a-Broken-Person-by-Janine-Shepherd.pdf
    • http://loaminoo.linkpc.net/2097098097095090/Broken-Silence-Broken-Trilogy-2-by-Jade-Buchanan.pdf
    • http://loaminoo.linkpc.net/7092093098092/Beautiful-Broken-Promises-Broken-3-by-Kimberly-Lauren.pdf
    • http://loaminoo.linkpc.net/3093093099095096/Broken-by-Lies-Bound-and-Broken-1-by-Rebecca-Shea.pdf
    • http://loaminoo.linkpc.net/3099091099091099/Broken-Wings-Dark-Angel-Chronicles-2-by-Melanie-Ni

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