Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e1651b84615e406…

MALICIOUS

PDF

20.3 KB Created: 2019-04-30 17:51:55 +01:00 Authoring application: mPDF 5.7
MD5: 2def17f619b2024d1bed841ab7e1bf93 SHA-1: 4c9b8c2324734722706377b16a1f1acac8b40e85 SHA-256: 4e1651b84615e406029d608de203947a11f02d83c988ea26af51f459384cfb1f
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, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though partially corrupted, contains URLs that are part of this link farm. The primary attack pattern appears to be the distribution of a large number of links, potentially to manipulate search engine results or to serve as a distribution point for other malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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/1090097092091099099/Trespassing-Across-America-One-Man-s-Epic-Never-Done-Before-and-Sort-of-Illegal-Hike-Across-the-Heartland-by-Ken-Ilgunas.pdf
    • http://loaminoo.linkpc.net/1091098096092095/Stumbling-Thru-Hike-Your-Own-Hike-by-A-Digger-Stolz.pdf
    • http://loaminoo.linkpc.net/7094091091099094/The-Smithsonian-Guides-to-Natural-America-The-Heartland-by-Suzanne-Winckler.pdf
    • http://loaminoo.linkpc.net/1097092098099097/Impossible-Subjects-Illegal-Aliens-and-the-Making-of-Modern-America-by-Mae-M-Ngai.pdf
    • http://loaminoo.linkpc.net/2096097096098098/Organizing-Your-Home-with-SORT-and-SUCCEED-Five-simple-steps-to-stop-clutter-before-it-starts-save-money-and-simplify-your-life-SORT-and-SUCCEED-Organizing-Solutions-Series-by-Darla-DeMorrow.pdf
    • http://loaminoo.linkpc.net/2098094091097/The-Epic-of-Latin-America-by-John-Armstrong-Crow.pdf
    • http://loaminoo.linkpc.net/6091098097096/There-Is-Power-in-a-Union-The-Epic-Story-of-Labor-in-America-by-Philip-Dray.pdf
    • http://loaminoo.linkpc.net/8091093094095/The-Warmth-of-Other-Suns-The-Epic-Story-of-America-s-Great-Migration-by-Isabel-Wilkerson.pdf
    • http://loaminoo.linkpc.net/3096098091099093/War-on-the-Run-The-Epic-Story-of-Robert-Rogers-and-the-Conquest-of-America-s-First-Frontier-by-John-F-Ross.pdf
    • http://loaminoo.linkpc.net/4097098090091090/Trespassing-by-Pat-Griffith.pdf
    • http://loaminoo.linkpc.net/6099091094099092/The-Big-Spenders-The-Epic-Story-of-the-Rich-Rich-the-Grandees-of-America-and-the-Magnificoes-and-How-They-Spent-Their-Fortunes-by-Lucius-Beebe.pdf
    • http://loaminoo.linkpc.net/8098098094/Trespassing-by-Brandi-Reeds.pdf
    • http://loaminoo.linkpc.net/9091098099096095/Forgive-My-Trespassing-by-Cynthia-Blomquist-Gustavson.pdf
    • http://loaminoo.linkpc.net/3098092090/The-Hike-by-Drew-Magary.pdf
    • http://loaminoo.linkpc.net/2092093099091098/The-Hike-by-John-Inman.pdf
    • http://loaminoo.linkpc.net/3097097093098091/Famous-Five-10-Five-On-A-Hike-Together-by-Enid-Blyton.pdf
    • http://loaminoo.linkpc.net/5090095098091093/Trespassing-on-Einstein-s-Lawn-A-Father-a-Daughter-the-Meaning-of-Nothing-and-the-Beginning-of-Everything-by-Amanda-Gefter.pdf
    • http://loaminoo.linkpc.net/4095094095095097/Hike-Up-Devil-s-Mountain-by-Penny-Estelle.pdf
    • http://loaminoo.linkpc.net/2097091095097093/Heartland-by-Davis-Bunn.pdf
    • http://loaminoo.linkpc.net/3095095095097091/Heartland-by-Julie-Cannon.pdf
    • http://loaminoo.linkpc.net/6091098097096/There-

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