Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f44a41f30c7c8e…

MALICIOUS

PDF

27.7 KB Created: 2019-05-07 03:18:05 +01:00 Authoring application: mPDF 5.7
MD5: a3f7ed2e6e1d47472f3676385a86b883 SHA-1: b17b97066bfec5797170408ddefc55cbf8f28145 SHA-256: 38f44a41f30c7c8eff1bb57d2f217a9c4526bcf48662f3143b1bcb85d24388e4
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently classified as benign, the sheer volume and the heuristic firing of PDF_SEO_LINK_FARM suggest a malicious intent, likely for SEO manipulation or to redirect users to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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/1090098092094095090/How-to-Grow-Mushrooms-from-Scratch-A-Practical-Guide-to-Cultivating-Portobellos-Shiitakes-Truffles-and-Other-Edible-Mushrooms-by-Magdalena-Wurth.pdf
    • http://loaminoo.linkpc.net/8091097099096092/The-Audubon-Society-Field-Guide-to-North-American-Mushrooms-by-Gary-Lincoff.pdf
    • http://loaminoo.linkpc.net/9094098096097/Chorus-of-Mushrooms-by-Hiromi-Goto.pdf
    • http://loaminoo.linkpc.net/8091092095092097/Mushrooms-of-the-Rocky-Mountain-Region-by-Vera-Stucky-Evenson.pdf
    • http://loaminoo.linkpc.net/1091096095098095091/Morelling-The-Joys-of-Hunting-and-Preparing-Morel-Mushrooms-by-Margaret-M-Evans.pdf
    • http://loaminoo.linkpc.net/1091096095098090093/Morel-Hunting-How-to-Find-Preserve-Care-For-and-Prepare-the-Wild-Mushrooms-by-John-Maybrier.pdf
    • http://loaminoo.linkpc.net/8097098097093096/The-Holy-Mushroom-Evidence-of-Mushrooms-in-Judeo-Christianity-A-Critical-Re-Evaluation-of-the-Schism-Between-John-M-Allegro-and-R-Gordon-Wasson-Over-the-Theory-on-the-Entheogenic-Origins-of-Christianity-Presented-in-the-Sacred-Mushroom-and-the-Cross-by-Jan-Irvin.pdf
    • http://loaminoo.linkpc.net/5091090093095099/Cultivating-Women-Cultivating-Science-Flora-s-Daughters-and-Botany-in-England-1760-to-1860-by-Ann-B-Shteir.pdf
    • http://loaminoo.linkpc.net/1091097098090096097/Practical-Guide-To-Teaching-English-Within-The-National-Curriculum-Practical-Guides-Series-by-Bill-Laar.pdf
    • http://loaminoo.linkpc.net/1090099090099094/Finding-Magdalena-Magdalena-1-by-Shannon-Condon.pdf
    • http://loaminoo.linkpc.net/3096093096099099/The-Shire-Glendalf-s-Guide-to-Cultivating-Your-Future-Self-by-Glen-Swartwout.pdf
    • http://loaminoo.linkpc.net/1090098093095092092/Fundamentals-The-Corporate-Guide-to-Cultivating-Mindshare-by-Dian-Griesel.pdf
    • http://loaminoo.linkpc.net/3091098090092093/Cat-Scratch-Fever-Cat-Scratch-1-by-Tara-K-Harper.pdf
    • http://loaminoo.linkpc.net/8092096099093093/The-Vegetable-Gardener-s-Guide-to-Permaculture-Creating-an-Edible-Ecosystem-by-Christopher-Shein.pdf
    • http://loaminoo.linkpc.net/7097093097090091/Nature-s-Garden-A-Guide-to-Identifying-Harvesting-and-Preparing-Edible-Wild-Plants-by-Samuel-Thayer.pdf
    • http://loaminoo.linkpc.net/2096094095094099/How-to-Be-Everything-A-Guide-for-Those-Who-Still-Don-t-Know-What-They-Want-to-Be-When-They-Grow-Up-by-Emilie-Wapnick.pdf
    • http://loaminoo.linkpc.net/1090098092093098098/Stephan-Wurth-Ghost-Town-by-Stephan-Wurth.pdf
    • http://loaminoo.linkpc.net/6090098098098095/Bonsai-Master-Guide-How-to-grow-a-bonsai-tree-2018-Bonsai-Beginner-s-Guide-by-Hitomi-Nakamura.pdf
    • http://loaminoo.linkpc.net/9096099095095096/The-Everything-Guide-to-Mobile-Apps-A-Practical-Guide-to-Affordable-Mobile-App-Development-for-Your-Business-by-Peggy-Anne-Salz.pdf
    • http://loaminoo.linkpc.net/3095092090095092/For-Lesbian-Parents-Your-Guide-to-Helping-Your-Family-Grow-Up-Happy-Healthy-and-Proud-by-Suzanne-M-Johnson.pdf

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