Malicious PDF — malware analysis report

Static analysis result for SHA-256 38daf09eb2bbe297…

MALICIOUS

PDF

28.2 KB Created: 2019-04-30 04:09:28 +01:00 Authoring application: mPDF 5.7
MD5: 681da6ea970b15c9d5ca569e41a90cce SHA-1: 624dafb1a0d412545cff7c09269651c8516f3563 SHA-256: 38daf09eb2bbe2974d0b3a31deb0c73c863029d8e40866f6f2aada543228c190
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and a critical heuristic for containing a large number of external links. While the extracted URLs themselves appear benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO spam or to distribute further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

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/3a04a07a08a03/Spider-Woman-s-Granddaughters-Traditional-Tales-and-Contemporary-Writing-by-Native-American-Women-by-Paula-Gunn-Allen.pdf
    • http://muicuiu.dumb1.com/3a08a06a01a02a04/The-Woman-Who-Owned-the-Shadows-by-Paula-Gunn-Allen.pdf
    • http://muicuiu.dumb1.com/3a08a06a04a02a02/Song-of-the-Turtle-American-Indian-Literature-1974-1994-by-Paula-Gunn-Allen.pdf
    • http://muicuiu.dumb1.com/1a03a09a01a09a08/Reinventing-the-Enemy-s-Language-Contemporary-Native-Women-s-Writings-of-North-America-by-Joy-Harjo.pdf
    • http://muicuiu.dumb1.com/3a08a06a09a09a03/Talking-Leaves-Contemporary-Native-American-Short-Stories-by-Craig-Lesley.pdf
    • http://muicuiu.dumb1.com/3a03a03a01a08a04/Writing-Women-s-Lives-An-Anthology-Of-Autobiographical-Narratives-By-Twentieth-Century-American-Women-Writers-by-Susan-Cahill.pdf
    • http://muicuiu.dumb1.com/4a02a09a03a03a06/The-Polygamous-Wives-Writing-Club-From-the-Diaries-of-Mormon-Pioneer-Women-by-Paula-Kelly-Harline.pdf
    • http://muicuiu.dumb1.com/3a08a06a09a08a07/Native-American-Legends-Southeastern-Legends----Tales-from-the-Natchez-Caddo-Biloxi-Chickasaw-and-Other-Nations-American-Folklore-Series-by-George-E-Lankford.pdf
    • http://muicuiu.dumb1.com/6a02a09a09a01a06/African-Women-Writing-Resistance-An-Anthology-of-Contemporary-Voices-by-Jennifer-Browdy-de-Hernandez.pdf
    • http://muicuiu.dumb1.com/2a05a01a04a03a01/Strong-Women-Soft-Hearts-A-Woman-s-Guide-to-Cultivating-a-Wise-Heart-and-a-Passionate-Life-by-Paula-Rinehart.pdf
    • http://muicuiu.dumb1.com/9a00a00a09a04a09/Between-the-Novel-and-the-News-The-Emergence-of-American-Women-s-Writing-by-Sari-Edelstein.pdf
    • http://muicuiu.dumb1.com/3a08a06a09a07a00/Native-Authenticity-Transnational-Perspectives-On-Native-American-Literary-Studies-by-Deborah-L-Madsen.pdf
    • http://muicuiu.dumb1.com/4a05a07a01a07/Tanzania-on-Tuesday-Writing-by-American-Women-Abroad-by-Kathleen-Coskran.pdf
    • http://muicuiu.dumb1.com/2a07a05a00a07a05/The-Book-on-Writing-The-Ultimate-Guide-to-Writing-Well-by-Paula-LaRocque.pdf
    • http://muicuiu.dumb1.com/8a09a04a04a02a00/Learning-Native-Wisdom-What-Traditional-Cultures-Teach-Us-about-Subsistence-Sustainability-and-Spirituality-by-Gary-Holthaus.pdf
    • http://muicuiu.dumb1.com/5a00a08a00a00a09/Talk-with-You-Like-a-Woman-African-American-Women-Justice-and-Reform-in-New-York-1890-1935-by-Cheryl-D-Hicks.pdf
    • http://muicuiu.dumb1.com/1a01a05a03a02a01a05/Stenciling-Techniques-A-Complete-Guide-to-Traditional-and-Contemporary-Designs-for-the-Home-by-Jane-Gauss.pdf
    • http://muicuiu.dumb1.com/3a00a08a05a06a09/Irish-Traditional-Cooking-Over-300-Recipes-from-Ireland-s-Heritage-by-Darina-Allen.pdf
    • http://muicuiu.dumb1.com/8a03a00a09a09/Silk-Stalkings-More-Women-Write-Of-Murder-by-James-E-Gunn.pdf
    • http://muicuiu.dumb1.com/1a00a09a09a04a08a03/The-New-Encyclopedia-of-Jewelry-Making-Techniques-A-Comprehensive-Visual-Guide-to-Traditional-and-Contemporary-Techniques-by-Jinks-McGrath.pdf

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