Malicious PDF — malware analysis report

Static analysis result for SHA-256 53cb8820c165586f…

MALICIOUS

PDF

14.6 KB Created: 2019-05-05 16:26:53 +01:00 Authoring application: mPDF 5.7
MD5: fbbd6ffd5595e79ec6a3d8caec8790ed SHA-1: ba3a7801887f8e516bd6f28b368b318e0bbcb09a SHA-256: 53cb8820c165586f3223b83d1c985176e04545e1015e576a5c6ba164aad33ede
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external websites, a common technique for SEO spam or distributing malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the document body contains numerous URLs, suggesting the primary intent is to redirect the user to these external sites. The specific URLs appear to be book titles, possibly to make the spam seem less suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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/4090094093096092/Blood-Rush-A-Tale-of-the-Blood-Breed-2-by-Jenika-Snow.pdf
    • http://loaminoo.linkpc.net/7091094096097096/Blood-on-Snow-Der-Auftrag-Blood-on-Snow-1-by-Jo-Nesb-.pdf
    • http://loaminoo.linkpc.net/1091096092097090098/A-Rush-of-Blood-Bob-Skinner-20-by-Quintin-Jardine.pdf
    • http://loaminoo.linkpc.net/1096096092099096/Blood-Rush-Lost-Witch-2-by-Katie-Lee-O-39-Guinn.pdf
    • http://loaminoo.linkpc.net/5097097090094095/V-r-a-havon-Blood-on-Snow-1-by-Jo-Nesb-.pdf
    • http://loaminoo.linkpc.net/8096090090097097/Snow-Blood-and-Envy-by-Jean-Haus.pdf
    • http://loaminoo.linkpc.net/3095098090095093/Cold-Blood-Aidan-Snow-1-by-Alex-Shaw.pdf
    • http://loaminoo.linkpc.net/4095099092090099/The-Vampire-Christopher-Blood-and-Snow-3-by-RaShelle-Workman.pdf
    • http://loaminoo.linkpc.net/2090090091094091/Love-Bleeds-Blood-and-Snow-9-by-RaShelle-Workman.pdf
    • http://loaminoo.linkpc.net/1091090090098090090/Cindy-Witch-Blood-and-Snow-13-by-RaShelle-Workman.pdf
    • http://loaminoo.linkpc.net/7096094094094/Snow-White-Blood-Red-The-Grimm-Diaries-Prequels-1-by-Cameron-Jace.pdf
    • http://loaminoo.linkpc.net/4094093095093095/Zendar-A-Tale-of-Blood-and-Sand-by-K-T-Munson.pdf
    • http://loaminoo.linkpc.net/7092096096093/His-by-Jenika-Snow.pdf
    • http://loaminoo.linkpc.net/4093096092098097/Have-A-Nice-Day-A-Tale-Of-Blood-And-Sweatsocks-by-Mick-Foley.pdf
    • http://loaminoo.linkpc.net/4090099096095090/Blood-Solstice-The-Tale-of-Lunarmorte-3-by-Samantha-Young.pdf
    • http://loaminoo.linkpc.net/3097095097097/Have-a-Nice-Day-A-Tale-of-Blood-and-Sweatsocks-by-Mick-Foley.pdf
    • http://loaminoo.linkpc.net/2090096093094090/Broken-Promise---Blood-Drops-Blood-Stone-1-2-by-Tracy-Cooper-Posey.pdf
    • http://loaminoo.linkpc.net/4094096094094099/Gypsy-Blood-Born-to-Romany-Blood-1-by-Lorrie-Unites-Struiff.pdf
    • http://loaminoo.linkpc.net/2091098099095092/Dark-Banquet-Blood-and-the-Curious-Lives-of-Blood-Feeding-Creatures-by-Bill-Schutt.pdf
    • http://loaminoo.linkpc.net/1099098094094098/Depraved-Blood-A-Young-Bloodsuckers-Vampire-Tale-by-P-J-Dominicis.pdf
    • http://loaminoo.linkpc.net/4094093095093095/Ze

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