Malicious PDF — malware analysis report

Static analysis result for SHA-256 633e99782fa4ddc8…

MALICIOUS

PDF

21.5 KB Created: 2019-04-30 05:38:42 +01:00 Authoring application: mPDF 5.7
MD5: 5e236ecc4bd51510cc85dc407c6e9dd6 SHA-1: ffd1cbfe2fe8fdfb61d15bf654c5183c759121a9 SHA-256: 633e99782fa4ddc8a56b557834f2928f7c9da9cc85b8081a7e0a18130e74957e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which are structured as numeric slugs followed by book titles, indicating a link farm designed to attract users. The ML classifier also flagged this PDF as malicious. The primary attack pattern observed is the use of these links to potentially lead users to malicious content, likely as part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/9098097091097090/Surrender-Invites-Death-Fighting-the-Waffen-SS-in-Normandy-by-John-A-English.pdf
    • http://loaminoo.linkpc.net/1090091096095096096/Citizen-Soldiers-The-U-S-Army-from-the-Normandy-Beaches-to-the-Bulge-to-the-Surrender-of-Germany----June-7-1944-May-7-1945-by-Stephen-E-Ambrose.pdf
    • http://loaminoo.linkpc.net/1093090096098097/Fighting-Men-A-Chronicle-of-Three-Black-Civil-War-Fighting-Men-by-John-Zubritsky.pdf
    • http://loaminoo.linkpc.net/3098094094098099/The-Germans-in-Normandy-Death-Reaped-a-Terrible-Harvest-by-Richard-Hargreaves.pdf
    • http://loaminoo.linkpc.net/3097091090091099/The-Americans-at-D-Day-The-American-Experience-at-the-Normandy-Invasion-by-John-C-McManus.pdf
    • http://loaminoo.linkpc.net/9091092099090093/English-German-Bible---The-Gospels-XX---Matthew-Mark-Luke-amp-John-Basic-English-1949---Elberfelder-1905---Lutherbibel-1545-Parallel-Bible-Halseth-English-Book-935-by-Truthbetold-Ministry.pdf
    • http://loaminoo.linkpc.net/9098097091096099/World-War-2-Waffen-SS-Soldier-Stories-Eyewitness-Accounts-of-Hitler-s-Elite-Troops-Waffen-SS-World-War-2-WW2-WWII-German-Soldiers-Hitler-by-Ryan-Jenkins.pdf
    • http://loaminoo.linkpc.net/5098091097096/Surrender-of-the-Heart-by-Sally-D-John.pdf
    • http://loaminoo.linkpc.net/2097092093090094/66-Love-Letters-A-Conversation-with-God-That-Invites-You-into-His-Story-by-Larry-Crabb.pdf
    • http://loaminoo.linkpc.net/9095097092092098/WESTERN---Sheriff-Lee-McAlister-in-DAS-DUELL---US-Marshal-John-W-Cobb-in-MIT-DEN-WAFFEN-DER-ZUKUNFT---Die-Rache-des-Texas-Rangers-sowie-Der-Tod-lauert-in-Texas-by-Uwe-H-S-ltz.pdf
    • http://loaminoo.linkpc.net/9099094091097098/The-Fighting-McCooks---America-s-Famous-Fighting-Family-by-Charles-Whalen.pdf
    • http://loaminoo.linkpc.net/1094098097099099/The-Fighting-Series-Box-Set-BONUS-Fighting-the-Fall-Prologue-by-J-B-Salsbury.pdf
    • http://loaminoo.linkpc.net/1090094099095097094/Death-in-an-English-Cottage-Murder-on-Location-2-by-Sara-Rosett.pdf
    • http://loaminoo.linkpc.net/1093091093096094/Death-of-a-Pirate-King-The-Adrien-English-Mysteries-4-by-Josh-Lanyon.pdf
    • http://loaminoo.linkpc.net/3099096092092094/Death-of-a-Pirate-King-The-Adrien-English-Mysteries-4-by-Josh-Lanyon.pdf
    • http://loaminoo.linkpc.net/3090090098099091/Death-of-a-Pirate-King-The-Adrien-English-Mysteries-4-by-Josh-Lanyon.pdf
    • http://loaminoo.linkpc.net/2099098099095092/Death-of-a-Pirate-King-The-Adrien-English-Mysteries-4-by-Josh-Lanyon.pdf
    • http://loaminoo.linkpc.net/1098092096098097/Fighting-for-Flight-Fighting-1-by-J-B-Salsbury.pdf
    • http://loaminoo.linkpc.net/1091096098/Fighting-for-Forever-Fighting-5-by-J-B-Salsbury.pdf
    • http://loaminoo.linkpc.net/1094097096092091/Fighting-to-Forget-Fighting-3-by-J-B-Salsbury.pdf

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