Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bb60eac64851a2c…

MALICIOUS

PDF

26.5 KB Created: 2019-05-07 03:06:06 +01:00 Authoring application: mPDF 5.7
MD5: 7e3c056be5aefba45c630ce0cff7895f SHA-1: 10001ea27ce1344641fe5ec6cc48b398fc6db697 SHA-256: 1bb60eac64851a2c34b2912ad8c4d792901ab8b09a0d0170c58657bfd1d0de8c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF document contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. While the document body is heavily obfuscated, the presence of a link farm suggests a social engineering attempt to direct users to potentially malicious content hosted on external domains. 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/4a05a03a02a03a05/How-To-Learn-Any-Language-Quickly-Easily-Inexpensively-Enjoyably-and-on-Your-Own-by-Barry-Farber.pdf
    • http://muicuiu.dumb1.com/9a08a03a05a06a03/Never-Run-Out-Of-Things-To-Write-About-Learn-How-To-Easily-Generate-New-Content-Ideas-by-Liudas-Butkus.pdf
    • http://muicuiu.dumb1.com/3a03a01a07a09a06/Language-Learning-Secrets-Revealed-How-Anyone-can-Learn-a-Language-by-Peter-D-Campbell.pdf
    • http://muicuiu.dumb1.com/3a05a06a09a07a09/Fluent-in-3-Months-How-Anyone-at-Any-Age-Can-Learn-to-Speak-Any-Language-from-Anywhere-in-the-World-by-Benny-Lewis.pdf
    • http://muicuiu.dumb1.com/6a00a07a00a03/Fluent-Forever-How-to-Learn-Any-Language-Fast-and-Never-Forget-It-by-Gabriel-Wyner.pdf
    • http://muicuiu.dumb1.com/4a08a07a09a03/The-Language-Police-How-Pressure-Groups-Restrict-What-Students-Learn-by-Diane-Ravitch.pdf
    • http://muicuiu.dumb1.com/9a06a05a00a08a07/Learn-Spanish-the-Fast-and-Fun-Way-The-Activity-Kit-That-Makes-Learning-a-Language-Quick-and-Easy-by-Heywood-Wald.pdf
    • http://muicuiu.dumb1.com/7a03a05a04a00a05/Farber-on-Film-The-Complete-Film-Writings-by-Manny-Farber.pdf
    • http://muicuiu.dumb1.com/8a08a08a03a07a01/English---German-Dictionary-W-rterbuch-Englisch---Deutsch-Over-25-000-Translations-Learn-How-to-Speak-German-Language-Tools-by-Klaus-R-diger.pdf
    • http://muicuiu.dumb1.com/9a03a05a00a04/Learn-Spanish-with-stories-and-audios-as-workbook-Spanish-language-course-for-beginners-and-advanced-learners-Spanish-made-simple-SPRAUCH-1-by-Anton-Hager.pdf
    • http://muicuiu.dumb1.com/9a05a08a09a00a09/Learn-To-Draw-ABC-Learn-the-shape-of-letters-and-bring-them-to-life-as-fun-drawings-by-istein-Kristiansen.pdf
    • http://muicuiu.dumb1.com/9a02a07a03a04a09/How-to-Get-Bookkeeping-Clients-Quickly-by-Sylvia-Jaumann.pdf
    • http://muicuiu.dumb1.com/5a07a08a08a08a03/XSLT-Quickly-A-Tutorial-and-Concise-User-s-Guide-by-Bob-DuCharme.pdf
    • http://muicuiu.dumb1.com/2a08a01a02a09a03/Death-Come-Quickly-China-Bayles-22-by-Susan-Wittig-Albert.pdf
    • http://muicuiu.dumb1.com/2a04a09a01a07a08/A-Heart-Not-Easily-Broken-The-Butterfly-Memoirs-1-by-M-J-Kane.pdf
    • http://muicuiu.dumb1.com/2a02a04a05a01a05/Not-Easily-Washed-Away-Memoirs-Of-A-Muslim-s-Daughter-by-Anon-Beauty.pdf
    • http://muicuiu.dumb1.com/4a08a04a06a06a01/Elixir-by-Edward-B-Farber.pdf
    • http://muicuiu.dumb1.com/4a01a06a03a01a05/How-Does-It-Feel-to-Be-Old-by-Norma-Farber.pdf
    • http://muicuiu.dumb1.com/3a00a05a05a00a03/The-Big-Picture-Reflections-on-Science-Humanity-and-a-Quickly-Changing-Planet-by-David-Suzuki.pdf
    • http://muicuiu.dumb1.com/1a01a04a09a08a08a01/Bonobos-Learn-About-Bonobos-and-Enjoy-Colorful-Pictures---Look-and-Learn-50-Photos-of-Bonobos-by-Becky-Wolff.pdf
    • http://muicuiu.dumb1.com/3a03a01a07a09a06/Language-Learning-Secrets-Revealed-How-Anyone-can-Learn-a-Language-by-Peter-D-Campb