Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab74be05f8163f6…

MALICIOUS

PDF

19.2 KB Created: 2019-04-30 04:34:06 +01:00 Authoring application: mPDF 5.7
MD5: bf9bf746151232dcc809add0479aaf51 SHA-1: 6a45444f03db67baef0a68c2338974391e4e6957 SHA-256: 7ab74be05f8163f67f5c8452ea182510e19968dede0a4c0668759eedbc246343
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and contains a large number of embedded URLs, indicating a potential link farm designed to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically points to this behavior, suggesting the document's primary purpose is to host and link to external resources. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/7095092096093095/The-Three-Arks-Comet-Clement-series-4-by-Kevin-George.pdf
    • http://loaminoo.linkpc.net/1092094094091096/The-Night-of-the-Comet-by-George-Bishop.pdf
    • http://loaminoo.linkpc.net/3099090096099094/Eros-Ascending-Tales-of-the-Velvet-Comet-Series-1-by-Mike-Resnick.pdf
    • http://loaminoo.linkpc.net/8092096097092096/In-Memory-of-George-Clement-Noyes-by-Anonymous.pdf
    • http://loaminoo.linkpc.net/1090091098099097091/Bergmann-s-Comet-The-Bergmann-3-by-George-Pinneo.pdf
    • http://loaminoo.linkpc.net/7095092094091091/Who-Sent-Clement-Clement-1-by-Keith-A-Pearson.pdf
    • http://loaminoo.linkpc.net/2095090096094096/George-Washington-Werewolf-by-Kevin-Postupack.pdf
    • http://loaminoo.linkpc.net/1090091098096097094/Ben-Aaronovitch-Books-Checklist-Reading-Order-of-Doctor-Who-Series-PC-Peter-Grant-Series-and-List-of-All-Ben-Aaronovitch-Books-by-Kevin-Hanson.pdf
    • http://loaminoo.linkpc.net/3097094093093092/First-Colony-Citadel-Series-1-by-Kevin-Tumlinson.pdf
    • http://loaminoo.linkpc.net/1094099096096096/Storms-Sharani-Series-2-by-Kevin-L-Nielsen.pdf
    • http://loaminoo.linkpc.net/8096093094091098/Libba-Bray-Books-Checklist-Reading-Order-of-Gemma-Doyle-Series-The-Diviners-Series-and-List-of-All-Libba-Bray-Books-by-Kevin-Hanson.pdf
    • http://loaminoo.linkpc.net/4092092099091095/Bani-s-Dilemma-Book-1-of-the-Teen-Anti-Bullying-Series-by-Kevin-Carey-Infante.pdf
    • http://loaminoo.linkpc.net/7095092096093097/The-Alchemists-of-Barbal-David-Clement-Davies-by-David-Clement-Davies.pdf
    • http://loaminoo.linkpc.net/1097096094093095/The-Dead-War-Series-Book-1-by-George-L-Cook-III.pdf
    • http://loaminoo.linkpc.net/1093093095097094/Orson-Scott-Card-Series-Reading-Order-amp-Checklist-Series-List-in-Order---Ender-Series-Formic-War-Series-Shadow-Series-Ender-Series-amp-Tales-of-Alvin-Maker-Series-Listabook-Series-Order-Book-15-by-Listabook.pdf
    • http://loaminoo.linkpc.net/8090093097097099/Dark-at-Socorro-Western-Series-by-George-Vohs.pdf
    • http://loaminoo.linkpc.net/4093094099090099/Comet-Ell-Donsaii-5-by-Laurence-E-Dahners.pdf
    • http://loaminoo.linkpc.net/7090091097091091/Pregnant-Nita-by-Haley-39-s-Comet.pdf
    • http://loaminoo.linkpc.net/6090091097096/The-Heart-of-a-Comet-by-Pages-Matam.pdf
    • http://loaminoo.linkpc.net/3097094098099093/On-the-Blue-Comet-by-Rosemary-Wells.pdf

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