Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcfb281bef1b27d4…

MALICIOUS

PDF

26.0 KB Created: 2019-05-07 05:51:10 +01:00 Authoring application: mPDF 5.7
MD5: 72096f2e61d5064e33411eb61e07b134 SHA-1: 63254d072a4e1fb94910ff7aff214040bbd43730 SHA-256: dcfb281bef1b27d4a9c2a52c3a15d3d8751aff297111ce1615a8318368dd4512
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and contains a large number of embedded links to external PDF documents. This behavior is indicative of a link farm or SEO poisoning attack, designed to manipulate search engine rankings or distribute malicious content indirectly. The document body contains numerous URLs, many of which are marked as confirmed benign, but the sheer volume and the heuristic firing suggest a malicious intent to create a link farm.

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://seasasac.lflinkup.com/5da0da4da1da8da4/No-Excuses-Closing-the-Racial-Gap-in-Learning-by-Abigail-Thernstrom.pdf
    • http://seasasac.lflinkup.com/4da1da5da7da9da2/Colorblind-The-Rise-of-Post-Racial-Politics-and-the-Retreat-from-Racial-Equity-by-Tim-Wise.pdf
    • http://seasasac.lflinkup.com/4da1da5da6da7da7/The-White-Racial-Frame-Centuries-of-Racial-Framing-and-Counter-Framing-by-Joe-R-Feagin.pdf
    • http://seasasac.lflinkup.com/6da2da2da8da3da7/Measuring-the-Success-of-Learning-Through-Technology-A-Step-by-Step-Guide-for-Measuring-Impact-and-Calculating-ROI-on-E-Learning-Blended-Learning-and-Mobile-Learning-by-Tamar-Elkeles.pdf
    • http://seasasac.lflinkup.com/3da3da4da6da9da9/The-Dead-Girl-by-Melanie-Thernstrom.pdf
    • http://seasasac.lflinkup.com/2da5da6da8da2da9/Halfway-Heaven-Diary-of-a-Harvard-Murder-by-Melanie-Thernstrom.pdf
    • http://seasasac.lflinkup.com/4da0da1da3da5da6/The-Letters-of-John-and-Abigail-Adams-by-Abigail-Adams.pdf
    • http://seasasac.lflinkup.com/5da7da5da2da4da7/Learning-by-Doing-A-Handbook-for-Professional-Learning-Communities-at-Work-Book-amp-CD-ROM-by-Richard-DuFour.pdf
    • http://seasasac.lflinkup.com/6da2da2da7da8da6/The-Chief-Learning-Officer-Clo-Driving-Value-Within-a-Changing-Organization-Through-Learning-and-Development-by-Elkeles.pdf
    • http://seasasac.lflinkup.com/5da6da0da8da4da8/Learning-scikit-learn-Machine-Learning-in-Python-by-Ra-l-Garreta.pdf
    • http://seasasac.lflinkup.com/9da0da9da6da4da0/E-Learning-und-Blended-Learning-Selbstgesteuerte-Lernprozesse-zum-Wissensaufbau-und-zur-Qualifizierung-by-Erpenbeck.pdf
    • http://seasasac.lflinkup.com/8da5da4da1da1da5/Education-in-a-New-Dimension-The-Counseling-Learning-Approach-to-Community-Language-Learning-by-Jennybelle-P-Rardin.pdf
    • http://seasasac.lflinkup.com/5da0da3da8da1da1/All-Kinds-of-Minds-A-Young-Student-s-Book-about-Learning-Abilities-and-Learning-Disorders-by-Mel-Levine.pdf
    • http://seasasac.lflinkup.com/8da3da2da2da0da2/Learning-with-the-challenging-child-Forty-years-of-learning-from-educationally-handicapped-children-by-Grace-Myers-Petitclerc.pdf
    • http://seasasac.lflinkup.com/2da3da7da9da6da8/The-Pain-Chronicles-Cures-Myths-Mysteries-Prayers-Diaries-Brain-Scans-Healing-and-the-Science-of-Suffering-by-Melanie-Thernstrom.pdf
    • http://seasasac.lflinkup.com/5da0da3da6da3da9/The-Closing-by-Stella-K.pdf
    • http://seasasac.lflinkup.com/1da4da7da7da5da5/Closing-In-by-Sue-Fortin.pdf
    • http://seasasac.lflinkup.com/1da2da8da0da4da2/Where-Excuses-Go-to-Die-by-John-Espinosa-Nelson.pdf
    • http://seasasac.lflinkup.com/9da3da3da7da8da6/Lame-Excuses-by-Alle-Wells.pdf
    • http://seasasac.lflinkup.com/8da2da7da8da3da1/The-Book-of-Excuses-by-Gyles-Brandreth.pdf
    • http://seasasac.lflinkup.com/6da2da2da8da3da7/Measuring-the-Success-of-Learn