Malicious PDF — malware analysis report

Static analysis result for SHA-256 44527c4d85606554…

MALICIOUS

PDF

21.8 KB Created: 2019-05-02 10:42:06 +01:00 Authoring application: mPDF 5.7 First seen: 2021-06-13
MD5: 05328e900457f2fbf646f6b4a2299a3b SHA-1: 03eca0d6331c4088786fc4e8d48d607b7bb08b40 SHA-256: 44527c4d856065545c1b586b825f1e426005ebdfcbd773471515bd225e6e79a8
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting an attempt to drive traffic to external sites. While the document body is heavily obfuscated, the presence of numerous links and the ML_NYX_PDF_MALICIOUS firing indicate a malicious intent, likely for SEO spam or to redirect users to malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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/4a02a08a04a01a09/Fiendish-Play-Fiendish-Play-1-by-Angela-Richardson.pdf In PDF document text
    • http://muicuiu.dumb1.com/1a02a08a06a03a08/Fiendish-by-Brenna-Yovanoff.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a05a05a05a09a06/The-Fiendish-Furnishing-by-Tom-Schan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a08a06a05a09/The-Perfect-Play-Play-by-Play-1-by-Jaci-Burton.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a02a03a07a07a01/The-Perfect-Play-Play-by-Play-1-by-Jaci-Burton.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a08a04a03a00a06/Fearsome-Tales-For-Fiendish-Kids-by-Jamie-Rix.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a08a00a06a00/Pills-A-Go-Go-A-Fiendish-Investigation-into-Pill-Marketing-Art-History-amp-Consumption-by-Jim-Hogshire.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a05a04a02a03a01/Play-Better-Tennis-in-Two-Hours-Simplify-the-Game-and-Play-Like-the-Pros-by-Oscar-Wegner.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a02a08a08a06a06/Canine-Play-Behavior-The-Science-Of-Dogs-At-Play-by-Mechtild-K-ufer.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a02a05a04a09a08/Play-by-Play-Calling-The-Wildest-Games-In-Sports-From-SEC-Football-to-College-Basketball-The-Masters-and-More-by-Verne-Lundquist.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a05a07a09a03a07/Play-Learning-How-Play-Motivates-and-Enhances-Children-s-Cognitive-and-Social-Emotional-Growth-by-Dorothy-G-Singer.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a00a08a06a02a09/Changing-the-Game-Play-by-Play-2-by-Jaci-Burton.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a05a00a04a02a06/The-Final-Score-Play-by-Play-13-by-Jaci-Burton.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a00a08a09a04/Taking-a-Shot-Play-by-Play-3-by-Jaci-Burton.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a07a01a07a01a09/Taking-a-Shot-Play-by-Play-3-by-Jaci-Burton.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a05a05a09a08a01/Play-Me-Real-Play-Me-4-by-Tracy-Wolff.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a05a05a09a05a04/Play-Me-Wild-Play-Me-1-by-Tracy-Wolff.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a04a04a05/Play-On-Play-On-1-by-Samantha-Young.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a07a03a01a01a01/Balanced-and-Barefoot-How-Unrestricted-Outdoor-Play-Makes-for-Strong-Confident-and-Capable-Children-by-Angela-J-Hanscom.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a04a01a09a04a04/The-Blood-Countess-Erzebet-Bathory-of-Hungary-1560-1614-A-Gothic-Horror-Poem-of-Violence-and-Rage-With-Bathory-a-Play-for-Single-Performer-1560-1614-With-Bathory-a-Play-for-Single-Performer-by-Robert-Peters.pdfIn PDF document text

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