Malicious PDF — malware analysis report

Static analysis result for SHA-256 d781bdc4252abb37…

MALICIOUS

PDF

19.0 KB Created: 2019-05-01 09:45:18 +01:00 Authoring application: mPDF 5.7
MD5: 2b9e1dc2f304fe604fd41fa85e87a0cc SHA-1: 7590977ca81bfb6039a4657f1f2eef4c84fefaf0 SHA-256: d781bdc4252abb37e8c14c0385951974244d6b44ede08474afe000b09e304dae
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 by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection tactic. While the specific URLs extracted appear benign, the sheer volume and the ML classifier's high confidence indicate a malicious intent, likely to distribute further malware or phishing content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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://muicuiu.dumb1.com/3a00a07a02a08a04/Jamie-at-Home-Cook-Your-Way-to-the-Good-Life-by-Jamie-Oliver.pdf
    • http://muicuiu.dumb1.com/3a02a03a01a02a05/Jamie-s-Kitchen-by-Jamie-Oliver.pdf
    • http://muicuiu.dumb1.com/3a01a01a00a09a09/Jamie-s-Dinners-by-Jamie-Oliver.pdf
    • http://muicuiu.dumb1.com/3a00a08a03a03a05/Jamie-s-America-by-Jamie-Oliver.pdf
    • http://muicuiu.dumb1.com/8a02a05a08a05a01/The-Journals-of-Lewis-amp-Clark-1804-1806-Meriwether-Lewis-1774-1809-amp-William-Clark-1770-1838-by-Meriwether-Lewis.pdf
    • http://muicuiu.dumb1.com/4a09a03a02a05a07/Kissing-Jamie-Baker-Jamie-Baker-1-5-by-Kelly-Oram.pdf
    • http://muicuiu.dumb1.com/1a01a03a05a08a07/Prepare-by-Geoffrey-Germann.pdf
    • http://muicuiu.dumb1.com/7a07a03a06a07a07/Prepare-to-Win-by-Carroll-Smith.pdf
    • http://muicuiu.dumb1.com/7a07a03a06a01a01/Prepare-to-Be-Shocked-by-Geoff-Tibballs.pdf
    • http://muicuiu.dumb1.com/7a07a03a07a01a04/The-Appalachian-Trail-How-to-Prepare-for-and-Hike-It-by-Jan-D-Curran.pdf
    • http://muicuiu.dumb1.com/1a09a09a03a00a07/More-Than-Jamie-Baker-Jamie-Baker-2-by-Kelly-Oram.pdf
    • http://muicuiu.dumb1.com/4a03a07a09a01/Being-Jamie-Baker-Jamie-Baker-1-by-Kelly-Oram.pdf
    • http://muicuiu.dumb1.com/8a08a03a03a08a02/The-Collected-Letters-of-C-S-Lewis-Volume-3-Narnia-Cambridge-and-Joy-1950---1963-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/5a04a09a05a09a05/How-to-Prepare-for-Verbal-Ability-and-Reading-Comprehension-for-CAT-by-Arun-Sharma.pdf
    • http://muicuiu.dumb1.com/2a02a09a04a08/Teens-and-the-Job-Game-Prepare-Today-Win-It-Tomorrow-by-Beverly-Slomka.pdf
    • http://muicuiu.dumb1.com/9a07a00a02a02a07/How-to-Prepare-Inexpensive-Meals-The-Basic-s-Volume-I-by-Fredy-Seidel.pdf
    • http://muicuiu.dumb1.com/3a09a09a01a06a09/The-Prepper-s-Pocket-Companion-How-to-Prepare-for-the-End-of-the-World-as-We-Know-It-by-Arthur-T-Bradley.pdf
    • http://muicuiu.dumb1.com/7a01a08a02a08/From-Writer-To-Author-Prepare-your-Manuscript-for-Publication-by-Anne-Haw-Holt.pdf
    • http://muicuiu.dumb1.com/3a07a01a03a04a09/The-Suppressed-History-of-America-the-Murder-of-Meriwether-Lewis-and-the-Mysterious-Discoveries-of-the-Lewis-and-Clark-Expedition-by-Paul-Schrag.pdf
    • http://muicuiu.dumb1.com/9a01a03a00a04a06/Critical-Testing-Processes-Plan-Prepare-Perform-Perfect-by-Rex-Black.pdf
    • http://muicuiu.dumb1.com/7a07a03a07a01a04/The

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