Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bb4f43bb3af41cf…

MALICIOUS

PDF

16.8 KB Created: 2019-04-30 03:26:29 +01:00 Authoring application: mPDF 5.7
MD5: c84157003c869e5432c5324bb84da8bb SHA-1: 709d1685839b23ea583c446c88acd824b35458ed SHA-256: 1bb4f43bb3af41cf2e33655ba468bd2f136df19fe6b120b57002526658b2278c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier strongly flagged this PDF as malicious. While the individual linked PDFs are currently marked as benign, the overall structure and the heuristic firing indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/2098095096093097/Dave-Barry-s-Only-Travel-Guide-You-ll-Ever-Need-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/6095095091093/Dave-Barry-s-Complete-Guide-to-Guys-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/3094099091091090/Live-Right-and-Find-Happiness-Although-Beer-is-Much-Faster-Life-Lessons-and-Other-Ravings-from-Dave-Barry-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/3098095097098097/Dave-Barry-s-Money-Secrets-Like-Why-Is-There-a-Giant-Eyeball-on-the-Dollar-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/1090094098096/I-ll-Mature-When-I-m-Dead-Dave-Barry-s-Amazing-Tales-of-Adulthood-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/3099091097090090/More-of-Dave-Barry-s-Greatest-Hits-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/2099093090096097/Dave-Barry-Turns-Forty-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/2099095093093093/Dave-Barry-Hits-Below-the-Beltway-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/2096095095098092/Big-Trouble-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/1098095096095098/Big-Trouble-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/3092094098092097/Peter-and-the-Starcatchers-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/2090094099091091/Blood-Tide-Never-Land-3-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/1098091092096097/Escape-from-the-Carnivale-Never-Land-Books-1-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/4091094097/Best-State-Ever-A-Florida-Man-Defends-His-Homeland-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/3098094095090090/The-Shepherd-the-Angel-and-Walter-the-Christmas-Miracle-Dog-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/2097099097090098/Lessons-From-Lucy-The-Simple-Joys-of-an-Old-Happy-Dog-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/3096091094090/Peter-and-the-Shadow-Thieves-Peter-and-the-Starcatchers-2-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/1098091090091096/Peter-and-the-Shadow-Thieves-Peter-and-the-Starcatchers-2-by-Dave-Barry.pdf
    • http://loaminoo.linkpc.net/1090091094092093095/Barry-Maitland-Books-2017-Checklist-Reading-Order-of-Brock-and-Kolla-Mysteries-The-Belltree-Trilogy-and-List-of-All-Barry-Maitland-Books-by-Sorted-Guide.pdf
    • http://loaminoo.linkpc.net/2099093095096090/Nanna-s-Travel-Tips-by-Dave-Cornford.pdf
    • http://loaminoo.linkpc.net/309209409809

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