Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84bc5fe3b7cc6a7…

MALICIOUS

PDF

27.3 KB Created: 2019-05-03 07:26:00 +01:00 Authoring application: mPDF 5.7
MD5: 7a327a8d916fa271dd43f11dac8fe84e SHA-1: 4fe925adbc088d3befa30017f6c718496e0f413a SHA-256: e84bc5fe3b7cc6a79f985556354a60cf2f2b2df9c06764b34c6cc39ca6f5f60e
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to external PDF files. While the specific URLs extracted were labeled as benign, the sheer volume and structure suggest a malicious intent, likely for SEO manipulation or as a lure for further malicious downloads. The ML_NYX_PDF_MALICIOUS classifier also strongly indicated maliciousness.

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://cmeinasaoo.duckdns.org/2b27b24b26b26b27/Writing-Fiction-A-Guide-to-Narrative-Craft-by-Janet-Burroway.pdf
    • http://cmeinasaoo.duckdns.org/7b28b20b20b26b26/Imaginative-Writing-The-Elements-of-Craft-by-Janet-Burroway.pdf
    • http://cmeinasaoo.duckdns.org/7b28b28b23b23b29/Secret-Windows-Essays-amp-Fiction-on-the-Craft-of-Writing-by-Stephen-King.pdf
    • http://cmeinasaoo.duckdns.org/2b27b25b22b27b20/Writing-Vivid-Dialogue-Professional-Techniques-for-Fiction-Authors-Writer-s-Craft-Book-16-by-Rayne-Hall.pdf
    • http://cmeinasaoo.duckdns.org/8b20b25b25b24/Writing-Deep-Point-Of-View-Professional-Techniques-for-Fiction-Authors-Writer-s-Craft-Book-13-by-Rayne-Hall.pdf
    • http://cmeinasaoo.duckdns.org/2b27b24b26b28b25/The-Writer-s-Portable-Mentor-A-Guide-to-Art-Craft-and-the-Writing-Life-by-Priscilla-Long.pdf
    • http://cmeinasaoo.duckdns.org/5b26b27b29b27b20/Blueprint-for-Writing-A-Writer-s-Guide-to-Creativity-Craft-and-Career-by-Rachel-Friedman-Ballon.pdf
    • http://cmeinasaoo.duckdns.org/7b28b20b21b24b21/The-Modern-Library-Writer-s-Workshop-A-Guide-to-the-Craft-of-Fiction-by-Stephen-Koch.pdf
    • http://cmeinasaoo.duckdns.org/2b27b25b22b28b22/Writing-Subtext-How-to-craft-subtext-that-develops-characters-boosts-suspense-and-reinforces-theme-Elizabeth-Lyon-on-writing-craft-Book-1-by-Elizabeth-Lyon.pdf
    • http://cmeinasaoo.duckdns.org/1b20b21b27b26b29b26/Will-Write-for-Food-The-Complete-Guide-to-Writing-Cookbooks-Restaurant-Reviews-Articles-Memoir-Fiction-and-More-by-Dianne-Jacob.pdf
    • http://cmeinasaoo.duckdns.org/3b21b20b21b27b27/Craft-Beer-Cooking-Recipes-The-Ultimate-Guide-to-Only-the-Best-Recipes-Using-Craft-Beer-from-Honey-Beer-Braised-Ribs-to-Crispy-Beer-Battered-Fish-This-Guide-Will-Keep-You-Coming-Back-for-More-by-Sarah-Sophia.pdf
    • http://cmeinasaoo.duckdns.org/6b23b29b24b27/Your-Writing-Coach-From-Concept-to-Character-from-Pitch-to-Publication---Everything-You-Need-to-Know-About-Writing-Novels-Non-fiction-New-Media-Scripts-and-Short-Stories-by-J-rgen-Wolff.pdf
    • http://cmeinasaoo.duckdns.org/3b29b23b21b22b22/The-Art-and-Craft-of-Novel-Writing-by-Oakley-Hall.pdf
    • http://cmeinasaoo.duckdns.org/2b26b25b24b25/On-Writing-A-Memoir-of-the-Craft-by-Stephen-King.pdf
    • http://cmeinasaoo.duckdns.org/4b24b25b29b22b25/The-Mammoth-Book-of-Golden-Age-Science-Fiction-Ten-Classic-Stories-from-the-Birth-of-Modern-Science-Fiction-Writing-by-Isaac-Asimov.pdf
    • http://cmeinasaoo.duckdns.org/4b20b24b27b21b23/Slices-of-Life-The-Art-and-Craft-of-Memoir-Writing-by-Cheryl-Stahle.pdf
    • http://cmeinasaoo.duckdns.org/2b27b25b20b23b29/Lessons-from-a-Lifetime-of-Writing-A-Novelist-Looks-at-His-Craft-by-David-Morrell.pdf
    • http://cmeinasaoo.duckdns.org/2b27b24b28b25b21/Writing-Away-A-Creative-Guide-to-Awakening-the-Journal-Writing-Traveler-by-Lavinia-Spalding.pdf
    • http://cmeinasaoo.duckdns.org/2b27b25b20b27b25/The-Book-on-Writing-The-Ultimate-Guide-to-Writing-Well-by-Paula-LaRocque.pdf
    • http://cmeinasaoo.duckdns.org/7b21b20b25b20b20/The-Art-of-Spiritual-Writing-How-to-Craft-Prose-That-Engages-and-Inspires-Your-Readers-by-Vinita-Hampton-Wright.pdf
    • http://cmeinasaoo.duckdns.org/2b27b25b22b27b20/Writing-Vivid-Dialogue-Professional-Techniques-for-Fiction-Authors-Writer-s-Craft-Book-16-by-Rayne-Hal

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