Malicious PDF — malware analysis report

Static analysis result for SHA-256 5501190e4ec6a7fa…

MALICIOUS

PDF

20.5 KB Created: 2019-04-30 01:58:08 +01:00 Authoring application: mPDF 5.7 First seen: 2021-06-04
MD5: a8ecc875aba2fa502f6c9661b72c702a SHA-1: 0933571b618692338486f131a39cff26d3dca02b SHA-256: 5501190e4ec6a7fa685c667418ab3c6c77d4f2c1f1da84f816544ccda0ef6016
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, which is indicative of a link farm or a phishing lure. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the presence of numerous links suggests an attempt to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/4a09a00a02a03a00/The-One-Room-Schoolhouse-Stories-About-the-Boys-by-Jim-Heynen.pdf In PDF document text
    • http://muicuiu.dumb1.com/3a01a02a07a03a02/Awesome-Adventure-Stories-for-Boys-19-Adventurous-Stories-for-Boys-by-Betty-J-Byers.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a06a06a06a01a02/One-Room-Schools-Stories-from-the-Days-of-1-Room-1-Teacher-8-Grades-by-Susan-Apps-Bodilly.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a08a04a03a02a04/Who-Let-Girls-in-the-Boys-Locker-Room-by-Elaine-Moore.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a01a02a08a09a05/Quick-10-Minute-Stories-for-Boys-Including-14-more-short-stories-for-easy-reading-by-Betty-J-Byers.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a01a03a01a07a08/Funny-Short-Stories-Kids-Learn-From-12-Sweet-and-Kind-Stories-for-Growing-Boys-and-Girls-by-Betty-J-Byers.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a05a08a03a07a03/Masterminds-and-Wingmen-Helping-Our-Boys-Cope-with-Schoolyard-Power-Locker-Room-Tests-Girlfriends-and-the-New-Rules-of-Boy-World-by-Rosalind-Wiseman.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a02a09a09a01a06/Room-118-3-Stories-by-Jason-White.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a01a09a05a02a09/Out-of-the-Girls-Room-and-Into-the-Night-Stories-by-Thisbe-Nissen.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a04a05a09a03a05/The-Oblivion-Room-Stories-of-Violation-by-Christopher-Conlon.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a03a02a05a04/The-One-World-Schoolhouse-Education-Reimagined-by-Salman-Khan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a06a07a05a09a03/Solitude-and-Splendor-Living-in-the-Schoolhouse-by-Maria-Termini.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a02a08a04a09a04/Stories-for-Boys-Who-Dare-to-be-Different-by-Ben-Brooks.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a03a00a03a00a04/Dead-Boys-Stories-by-Richard-Lange.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a02a03a08a06a02/You-Don-t-Even-Know-Me-Stories-and-Poems-About-Boys-by-Sharon-G-Flake.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a07a06a07a00a03/The-Hardy-Boys-Handbook-Seven-Stories-of-Survival-by-Franklin-W-Dixon.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a05a01a08a02a05/My-Mother-Says-Drums-Are-for-Boys-True-Stories-for-Gender-Rebels-by-Rae-Theodore.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a06a00a01a05a08/A-WILDer-Wonderland---Sexy-Stories-Of-The-Season-The-WILD-Boys-Of-Special-Forces-4-by-Angel-Payne.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a03a03a04a02a03/In-a-Dark-Dark-Room-and-Other-Scary-Stories-by-Alvin-Schwartz.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a04a04a08a01a08/Mandie-and-the-Schoolhouse-s-Secret-Mandie-Books-26-by-Lois-Gladys-Leppard.pdfIn PDF document text

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