Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e3f99994a502dd…

MALICIOUS

PDF

28.1 KB Created: 2019-05-01 13:51:40 +01:00 Authoring application: mPDF 5.7
MD5: 790fd4d13d61579734e1fb2ea8ce8600 SHA-1: d761ea8bcf42366e4cda55ca065a1945914559c0 SHA-256: 71e3f99994a502ddda99ea649710381c370360e7e7875cd1a69b7fc275b6152f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a link farm, indicating an attempt to direct users to numerous external URLs. The embedded URLs, while labeled benign, are part of this larger pattern. The ML classifier also flagged the document as malicious. The primary attack pattern observed is the distribution of external links, likely to facilitate further malicious activity or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

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://seasasac.lflinkup.com/3da5da8da3da2da6/The-Oyster-War-The-True-Story-of-a-Small-Farm-Big-Politics-and-the-Future-of-Wilderness-in-America-by-Summer-Brennan.pdf
    • http://seasasac.lflinkup.com/1da0da7da5da7da3da1/Oyster-Recipes-of-St-Mary-s-County-Maryland-Award-Winning-Recipes-from-19-Years-of-the-National-Oyster-Festival-Oyster-Cookoff-by-Ann-Loher.pdf
    • http://seasasac.lflinkup.com/9da7da1da1da6da1/Becoming-Canada-Our-Story-Our-Politics-Our-Future-by-Ken-Dryden.pdf
    • http://seasasac.lflinkup.com/1da0da9da8da2da0da0/How-Iowa-Conquered-the-World-The-Story-of-a-Small-Farm-State-s-Journey-to-Global-Dominance-by-Michael-Rank.pdf
    • http://seasasac.lflinkup.com/1da2da1da2da2da2/The-Ice-Passage-A-True-Story-of-Ambition-Disaster-and-Endurance-in-the-Arctic-Wilderness-by-Brian-Payton.pdf
    • http://seasasac.lflinkup.com/5da0da0da0da9da2/Wilderness-journey-A-true-love-story-Vienna-Brooks-saga-by-Erna-M-Holyer.pdf
    • http://seasasac.lflinkup.com/9da3da9da6da3/Let-Me-Play-The-Story-of-Title-IX-The-Law-That-Changed-the-Future-of-Girls-in-America-by-Karen-Blumenthal.pdf
    • http://seasasac.lflinkup.com/3da1da9da2da8da5/Madam-President-The-Extraordinary-True-and-Evolving-Story-of-Women-in-Politics-by-Catherine-Thimmesh.pdf
    • http://seasasac.lflinkup.com/6da2da0da0da7da7/The-Mystery-of-the-Shemitah-Updated-Edition-The-3-000-Year-Old-Mystery-That-Holds-the-Secret-of-America-s-Future-the-World-s-Future-and-Your-Future-by-Jonathan-Cahn.pdf
    • http://seasasac.lflinkup.com/4da0da8da7da9da9/Ghettoside-A-True-Story-of-Murder-in-America-by-Jill-Leovy.pdf
    • http://seasasac.lflinkup.com/1da7/Ghettoside-A-True-Story-of-Murder-in-America-by-Jill-Leovy.pdf
    • http://seasasac.lflinkup.com/1da0da6da2da9da1da0/PSI-Spies-The-True-Story-of-America-s-Psychic-Warfare-Program-by-Jim-Marrs.pdf
    • http://seasasac.lflinkup.com/4da2da3da4da5da2/Just-Like-Us-The-True-Story-of-Four-Mexican-Girls-Coming-of-Age-in-America-by-Helen-Thorpe.pdf
    • http://seasasac.lflinkup.com/8da8da0da0/Small-Fry-by-Lisa-Brennan-Jobs.pdf
    • http://seasasac.lflinkup.com/1da8da5da9da3da8/Escape-from-Slavery-The-True-Story-of-My-Ten-Years-in-Captivity-and-My-Journey-to-Freedom-in-America-by-Francis-Bok.pdf
    • http://seasasac.lflinkup.com/1da2da6da6da8da7/Crazy-Good-The-True-Story-of-Dan-Patch-the-Most-Famous-Horse-in-America-by-Charles-Leerhsen.pdf
    • http://seasasac.lflinkup.com/2da5da8da3da7da5/The-Flight-of-the-Falcon-The-True-Story-of-the-Escape-amp-Manhunt-for-America-s-Most-Wanted-Spy-by-Robert-Lindsey.pdf
    • http://seasasac.lflinkup.com/3da9da5da4da9da4/Ecodeviance-Soma-tics-for-the-Future-Wilderness-by-C-A-Conrad.pdf
    • http://seasasac.lflinkup.com/5da8da6da9da8/Courage-Has-No-Color-The-True-Story-of-the-Triple-Nickles-America-s-First-Black-Paratroopers-by-Tanya-Lee-Stone.pdf
    • http://seasasac.lflinkup.com/6da5da5da7da8da6/Terrible-Typhoid-Mary-A-True-Story-of-the-Deadliest-Cook-in-America-by-Susan-Campbell-Bartoletti.pdf

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