Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef9adf072b804dbd…

MALICIOUS

PDF

15.5 KB Created: 2019-04-30 04:12:18 +01:00 Authoring application: mPDF 5.7
MD5: 0deefa3179c2b26abb2299d70835fc94 SHA-1: f815e6032cdf242fc2ac575abe896614ef3566f2 SHA-256: ef9adf072b804dbdd81470ceff1c41eb05f4ec9a54f144689f509d60182e7eb3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified as a link farm. While the specific URLs appear benign, the sheer volume and the heuristic firing of PDF_SEO_LINK_FARM suggest a malicious intent to manipulate search engine results or redirect users to potentially harmful content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, limiting further analysis of direct payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/3096098097097094/Imperial-Life-in-the-Emerald-City-Inside-Iraq-s-Green-Zone-by-Rajiv-Chandrasekaran.pdf
    • http://loaminoo.linkpc.net/2091090094092097/Imperial-Life-in-the-Emerald-City-by-Rajiv-Chandrasekaran.pdf
    • http://loaminoo.linkpc.net/5090091093096090/Beautiful-New-Life-Clean-Romance-by-Emerald-Green.pdf
    • http://loaminoo.linkpc.net/1098090090095099/Life-In-The-No-Dating-Zone-The-Zone-1-by-Patricia-B-Tighe.pdf
    • http://loaminoo.linkpc.net/1099096096093095/798-Inside-China-s-Art-Zone-by-Wenya-Huang.pdf
    • http://loaminoo.linkpc.net/2095099094092092/The-Demon-Inside-The-Zone-War-Book-1-by-Terry-Cloutier.pdf
    • http://loaminoo.linkpc.net/3098092098094090/Why-We-Lost-A-General-s-Inside-Account-of-the-Iraq-and-Afghanistan-Wars-by-Daniel-P-Bolger.pdf
    • http://loaminoo.linkpc.net/2091090091094095/Hubris-The-Inside-Story-of-Spin-Scandal-and-the-Selling-of-the-Iraq-War-by-Michael-Isikoff.pdf
    • http://loaminoo.linkpc.net/6093098092099098/The-Iraq-War-Blog-An-Iraqi-Family-s-Inside-View-of-the-First-Year-of-the-Occupation-by-Faiza-Al-araji.pdf
    • http://loaminoo.linkpc.net/3090094095096099/Emerald-Green-by-Desiree-Holt.pdf
    • http://loaminoo.linkpc.net/5095096099094099/Emerald-Green-by-Kerstin-Gier.pdf
    • http://loaminoo.linkpc.net/2095092096091090/Green-Lantern-Emerald-Dawn-by-Keith-Giffen.pdf
    • http://loaminoo.linkpc.net/4093095091097091/Emerald-Green-Ruby-Red-Trilogy-3-by-Kerstin-Gier.pdf
    • http://loaminoo.linkpc.net/8096090096096/The-Emerald-City-of-Oz-Oz-6-by-L-Frank-Baum.pdf
    • http://loaminoo.linkpc.net/8094096099099/Emerald-City-by-David-Williamson.pdf
    • http://loaminoo.linkpc.net/3097095096095098/Emerald-City-of-Oz-by-L-Frank-Baum.pdf
    • http://loaminoo.linkpc.net/3098093096092098/Shadows-of-the-Emerald-City-by-J-W-Schnarr.pdf
    • http://loaminoo.linkpc.net/1090092098098098090/The-Emerald-City-of-Oz-Oz-6-by-L-Frank-Baum.pdf
    • http://loaminoo.linkpc.net/1090097091098094/Emerald-Green-The-Precious-Stone-Trilogy-3-by-Kerstin-Gier.pdf
    • http://loaminoo.linkpc.net/4093096090091094/Moses-Montefiore-Jewish-Liberator-Imperial-Hero-by-Abigail-Green.pdf
    • http://loaminoo.linkpc.net/6093098092099098/The-Iraq-War-Blog-An-Iraqi-Family-s-Inside-View-of-the-First-Year-of-th

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