Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e8dd35acf42dce9…

MALICIOUS

PDF

26.3 KB Created: 2019-05-05 15:57:24 +01:00 Authoring application: mPDF 5.7
MD5: d9734cb59d7549fdac2a9c4b3bb0756c SHA-1: 83cf2811e2b00770a7c6291c15c3612c294fc4f4 SHA-256: 4e8dd35acf42dce9a6da9d08c692202845c36ce5b465b34aa5db6d5b515f8a61
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF was flagged by a machine learning classifier as malicious and contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to phishing or malware distribution sites. While the specific content of the document body is unreadable, the presence of numerous links suggests an attempt to lure users to external resources. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates a mass external PDF link farm, with the first URL provided as an example.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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/6094094094098/Blackhorse-Riders-A-Desperate-Last-Stand-an-Extraordinary-Rescue-Mission-and-the-Vietnam-Battle-America-Forgot-by-Philip-Keith.pdf
    • http://loaminoo.linkpc.net/2098091096099099/50-Children-One-Ordinary-American-Couple-s-Extraordinary-Rescue-Mission-into-the-Heart-of-Nazi-Germany-by-Steven-Pressman.pdf
    • http://loaminoo.linkpc.net/1091092095099097097/Battle-for-the-Soul-M-tis-Children-Encounter-Evangelical-Protestants-at-Mackinaw-Mission-1823-1837-by-Keith-R-Widder.pdf
    • http://loaminoo.linkpc.net/6095092090097091/The-Cyrano-Saga-A-Desperate-Mission-by-R-D-Trimble.pdf
    • http://loaminoo.linkpc.net/2096093092099094/Desperate-Knight-by-Keith-W-Willis.pdf
    • http://loaminoo.linkpc.net/1098095094092090/Desperate-Hours-The-Epic-Rescue-of-the-Andrea-Doria-by-Richard-Goldstein.pdf
    • http://loaminoo.linkpc.net/1091091097098095093/Dog-Rescue-Mission-by-Joe-Lorenzano.pdf
    • http://loaminoo.linkpc.net/8094098095093099/Death-Mission-The-Stand-by-Valkyria-DeDieu.pdf
    • http://loaminoo.linkpc.net/3096094099092091/Saving-Cinnamon-The-Amazing-True-Story-of-a-Missing-Military-Puppy-and-the-Desperate-Mission-to-Bring-Her-Home-by-Christine-Sullivan.pdf
    • http://loaminoo.linkpc.net/4095096095097098/No-Mercy-Book-2-after-Phantom-Riders-MC-Hawk-No-cliffhangers-Stand-alone-romance-by-Tory-Richards.pdf
    • http://loaminoo.linkpc.net/2095097092093091/The-Greatest-Battle-Stalin-Hitler-and-the-Desperate-Struggle-for-Moscow-That-Changed-the-Course-of-World-War-II-by-Andrew-Nagorski.pdf
    • http://loaminoo.linkpc.net/4092092095090094/Last-Night-I-Dreamed-Of-Peace-An-Extraordinary-Diary-Of-Courage-From-The-Vietnam-War-by-ng-Th-y-Tr-m.pdf
    • http://loaminoo.linkpc.net/4097098099092091/Last-Night-I-Dreamed-of-Peace-An-Extraordinary-Diary-of-Courage-from-the-Vietnam-War-by-ng-Th-y-Tr-m.pdf
    • http://loaminoo.linkpc.net/5098094093099091/Indestructible-One-Man-s-Rescue-Mission-That-Changed-the-Course-of-WWII-by-John-R-Bruning.pdf
    • http://loaminoo.linkpc.net/3098095097090096/Ripcord-Screaming-Eagles-Under-Siege-Vietnam-1970-by-Keith-William-Nolan.pdf
    • http://loaminoo.linkpc.net/1092091091098091/The-Grey-Seas-Under-The-Perilous-Rescue-Mission-of-a-N-A-Salvage-Tug-by-Farley-Mowat.pdf
    • http://loaminoo.linkpc.net/3096090098098/We-Were-Soldiers-Once-and-Young-Ia-Drang---The-Battle-that-Changed-the-War-in-Vietnam-by-Harold-G-Moore.pdf
    • http://loaminoo.linkpc.net/3098096094094/The-Last-Stand-of-the-Tin-Can-Sailors-The-Extraordinary-World-War-II-Story-of-the-U-S-Navy-s-Finest-Hour-by-James-D-Hornfischer.pdf
    • http://loaminoo.linkpc.net/5091094091090095/Ordinary-Man-Extraordinary-Mission-The-Life-and-Work-of-E-Stanley-Jones-by-Stephen-A-Graham.pdf
    • http://loaminoo.linkpc.net/2095095096096099/Last-Stand-in-the-Carolinas-The-Battle-of-Bentonville-by-Mark-L-Bradley.pdf
    • http://loaminoo.linkpc.net/6095092090097091/The-Cyrano-Saga-A-Desperate-Mission-by-R

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