Malicious PDF — malware analysis report

Static analysis result for SHA-256 0646c2136eba30cb…

MALICIOUS

PDF

16.3 KB Created: 2019-04-30 04:14:44 +01:00 Authoring application: mPDF 5.7
MD5: 86e19dc36e974050ca780fd961650e28 SHA-1: f9e780b5182c503bf8ed5d790f04ec29cc654758 SHA-256: 0646c2136eba30cbd82ea08d7698806390028a0631372637585384072be5734e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which suggests an attempt to manipulate search engine results or redirect users to potentially malicious content. While the ML classifier flagged it as malicious, the specific URLs extracted were classified as benign, creating some uncertainty about the ultimate payload. The attack pattern is likely a form of SEO abuse or a redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/1098095095096090/Bound-by-Ice-A-True-North-Pole-Survival-Story-by-Sandra-Neil-Wallace.pdf
    • http://loaminoo.linkpc.net/4097094095095094/Moonlight-Murder-The-Last-Poetic-Prose-of-D-B-Wallace-by-D-B-Wallace.pdf
    • http://loaminoo.linkpc.net/7097090090095092/BEN-HUR-THE-FAIR-GOD-amp-THE-PRINCE-OF-INDIA-or-Why-Constantinople-Fell-LEW-WALLACE-PREMIUM-COLLECTION-Timeless-Wisdom-Collection-Book-1825-by-Lew-Wallace.pdf
    • http://loaminoo.linkpc.net/7097098097090094/Shreveport-and-Bossier-City-Photographs-and-Text-by-Neil-Johnson-With-a-Foreword-by-Jim-Montgomery-by-Neil-Johnson.pdf
    • http://loaminoo.linkpc.net/9099091093095094/Bonfire-of-the-Brands-How-I-Learnt-to-Live-Without-Labels-Neil-Boorman-by-Neil-Boorman.pdf
    • http://loaminoo.linkpc.net/1091092095095099090/Jewish-in-America-A-Set-of-Neil-Kleid-Graphic-Novels-by-Neil-Kleid.pdf
    • http://loaminoo.linkpc.net/3096095092094095/Unnatural-Creatures-Stories-Selected-by-Neil-Gaiman-by-Neil-Gaiman.pdf
    • http://loaminoo.linkpc.net/6094097098091091/Neil-Zurcher-s-Favorite-One-Tank-Trips-by-Neil-Zurcher.pdf
    • http://loaminoo.linkpc.net/3093095096/String-Theory-David-Foster-Wallace-on-Tennis-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/1098093094098090/The-Neil-Gaiman-Coloring-Book-by-Neil-Gaiman.pdf
    • http://loaminoo.linkpc.net/3099093092098094/Letters-of-Wallace-Stevens-by-Wallace-Stevens.pdf
    • http://loaminoo.linkpc.net/2097095095098091/Poems-Wallace-Stevens-by-Wallace-Stevens.pdf
    • http://loaminoo.linkpc.net/4093090099096095/The-Dulcie-O-Neil-Set-Dulcie-O-Neil-1-3-by-H-P-Mallory.pdf
    • http://loaminoo.linkpc.net/7092097091094098/DC-Universe-By-Neil-Gaiman-by-Neil-Gaiman.pdf
    • http://loaminoo.linkpc.net/8093097091099/Neil-Gaiman-s-Neverwhere-by-Neil-Gaiman.pdf
    • http://loaminoo.linkpc.net/1098093094097094/Neil-Gaiman-s-Likely-Stories-by-Neil-Gaiman.pdf
    • http://loaminoo.linkpc.net/8094098097095092/Ben-Hur-by-Lew-Wallace.pdf
    • http://loaminoo.linkpc.net/1098091090091094/Pookie-by-Ivy-L-Wallace.pdf
    • http://loaminoo.linkpc.net/2098094093093092/Yes-Man-by-Danny-Wallace.pdf
    • http://loaminoo.linkpc.net/9099093097098099/Tommy-by-R-S-Wallace.pdf

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