Malicious PDF — malware analysis report

Static analysis result for SHA-256 37807d1138d0cba7…

MALICIOUS

PDF

23.2 KB Created: 2019-05-01 22:08:44 +01:00 Authoring application: mPDF 5.7
MD5: 9f655054644c25aa045312f653d7f613 SHA-1: 5c0e471149ec6c17347419eb8064d1b8ac3f54f5 SHA-256: 37807d1138d0cba75de92e754de11ed911794fff2ef4da2827e3e593fef98683
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded links, many of which point to external PDF files. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates a mass external PDF link farm. While the document body is unreadable, the presence of numerous links suggests a potential attempt to manipulate search engine results or distribute malicious content through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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://unieoooq.linkpc.net/74e24e24e34e84e1/Great-Tapestries-The-Web-of-History-from-12th-To-the-20th-Century-by-Edita-Lausanne.pdf
    • http://unieoooq.linkpc.net/74e24e24e34e84e0/Le-Grand-Livre-du-Vin-The-Great-Book-of-Wine-by-Edita-Lausanne.pdf
    • http://unieoooq.linkpc.net/34e84e54e34e24e3/Remembering-War-The-Great-War-between-Memory-and-History-in-the-20th-Century-by-Jay-Murray-Winter.pdf
    • http://unieoooq.linkpc.net/14e84e54e44e3/Horror-of-the-20th-Century-An-Illustrated-History-by-Robert-E-Weinberg.pdf
    • http://unieoooq.linkpc.net/44e44e84e34e54e4/The-Discoveries-Great-Breakthroughs-in-20th-Century-Science-Including-the-Original-Papers-by-Alan-Lightman.pdf
    • http://unieoooq.linkpc.net/14e84e64e44e2/Science-Fiction-of-the-20th-Century-An-Illustrated-History-by-Frank-M-Robinson.pdf
    • http://unieoooq.linkpc.net/24e94e24e64e44e3/Five-More-Golden-Rules-Knots-Codes-Chaos-and-Other-Great-Theories-of-20th-Century-Mathematics-by-John-L-Casti.pdf
    • http://unieoooq.linkpc.net/84e74e64e74e84e1/20th-century-history-of-Springfield-and-Clark-County-Ohio-and-representative-citizens-by-William-Mahlon-Rockel.pdf
    • http://unieoooq.linkpc.net/84e44e14e84e34e7/1960s-Images-From-the-20th-Century-Images-of-the-20th-Century---Getty-Images-by-Nick-Yapp.pdf
    • http://unieoooq.linkpc.net/24e34e94e34e14e6/Naoki-Urasawa-s-20th-Century-Boys-Volume-01-Friends-20th-Century-Boys-1-by-Naoki-Urasawa.pdf
    • http://unieoooq.linkpc.net/74e24e24e44e74e0/Femtochemistry-Ultrafast-Chemical-and-Physical-Processes-in-Molecular-Systems-Lausanne-Switzerland-September-4-8-1995-by-Femtochemistry-The-Lausanne-Conference-1995-University-of-Lausanne-.pdf
    • http://unieoooq.linkpc.net/54e24e54e04e74e3/An-Independent-Women-s-World-From-the-12th-Century-to-the-Present-The-Beguines-and-Beguinages-in-the-Southern-Low-Country-by-Genevieve-de-Cant.pdf
    • http://unieoooq.linkpc.net/54e74e64e04e74e2/Comparative-Semitic-Philology-in-the-Middle-Ages-From-Sa-Adiah-Gaon-to-Ibn-Barkn-10th-12th-Century-by-A-Maman.pdf
    • http://unieoooq.linkpc.net/84e44e14e74e84e9/20th-Century-by-Sam-Sullivan.pdf
    • http://unieoooq.linkpc.net/94e44e14e14e74e0/The-12th-SS-Vol-1-the-History-of-the-Hitler-Youth-Panzer-Division-by-Hubert-Meyer.pdf
    • http://unieoooq.linkpc.net/84e44e14e84e94e3/1940s-Decades-of-the-20th-Century-by-Nick-Yapp.pdf
    • http://unieoooq.linkpc.net/84e44e14e74e84e7/A-Suitable-Boy--20th-century-edition-by-Vikram-Seth.pdf
    • http://unieoooq.linkpc.net/64e44e64e04e74e4/Unexplained-Mysteries-of-the-20th-Century-by-Janet-Bord.pdf
    • http://unieoooq.linkpc.net/84e44e14e74e84e8/Husbands-and-Lovers-20th-Century-2-by-Ruth-Harris.pdf
    • http://unieoooq.linkpc.net/84e44e14e84e34e2/The-Waves-20th-Century-Fiction-by-Virginia-Woolf.pdf

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