Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a6925bb642eb5c1…

MALICIOUS

PDF

15.6 KB Created: 2019-05-02 00:45:50 +01:00 Authoring application: mPDF 5.7
MD5: 3033de77519d5b5a534919c5a87cdfde SHA-1: 860b95ce7e1ce65866f359ac678e178de6e7d0cb SHA-256: 3a6925bb642eb5c17bf4fb04a0723555c39c405938c4f07d57e033c97780583f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. While the URLs themselves are currently marked as benign, the sheer volume and the PDF_SEO_LINK_FARM heuristic suggest a malicious intent to direct users to a potentially harmful resource or to artificially inflate search engine rankings for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/3099096093097/The-Secret-Island-The-Secret-Series-1-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/2093096093094095/The-Secret-Of-Moon-Castle-The-Secret-Series-5-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/2093094093093090/The-Secret-of-Killimooin-The-Secret-Series-4-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/9097098096096091/Good-Work-Secret-Seven-The-Secret-Seven-6-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/9097098096096093/Shock-for-the-Secret-Seven-The-Secret-Seven-13-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/9097098096096090/Secret-Seven-Win-Through-The-Secret-Seven-7-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/1091091098093091/The-Brave-Toy-Soldier-and-Other-Stories-Enid-Blyton-s-Popular-Rewards-Series-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/1098090097096090/The-Sneezing-Dog-And-Other-Stories-Enid-Blyton-s-Popular-Rewards-Series-Iv-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/2095095096090094/Five-on-a-Treasure-Island-Famous-Five-1-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/3095097094090098/Enid-Blyton-s-Malory-Towers-6-Books-Collection-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/3096095092097097/An-Enid-Blyton-Collection-The-Enchanted-Wood-The-Magic-Faraway-Tree-And-The-Folk-Of-The-Faraway-Tree-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/3098092090096090/Miss-Goldsleigh-s-Secret-The-Secret-Series-2-by-Amylynn-Bright.pdf
    • http://loaminoo.linkpc.net/9097098096095099/Looking-For-Enid-The-Mysterious-And-Inventive-Life-Of-Enid-Blyton-by-Duncan-McLaren.pdf
    • http://loaminoo.linkpc.net/1099095099098098/The-Island-of-Adventure-Adventure-1-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/2099093095093090/Enid-Blytons-Christmas-Tales-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/3097097093098098/Five-Get-into-a-Fix-Famous-Five-17-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/2095095096090095/Well-Done-Noddy-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/9097093097090/The-Six-Bad-Boys-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/2099093095092094/Five-Run-Away-Together-Famous-Five-3-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/3091092094090095/Hello-Mr-Twiddle-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/3096095092097097/An-Enid-Blyton-Co

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