PDF static analysis report

Static analysis result for SHA-256 0691878841a17e42…

SUSPICIOUS

PDF

47.7 KB Created: 2018-06-14 10:31:43 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 687f32b17fd41afe749aa8da31b69727 SHA-1: a30e10d712a3deaa587a346c6ef752d6973d8dbb SHA-256: 0691878841a17e422e8f58539f59da9548753644298a972b29f14fd56b059e34
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains multiple embedded URLs pointing to external resources, with one specifically identified as a potential download link. The ML classifier also flagged the PDF as malicious. The presence of a 'download button' heuristic further supports the interpretation that the document is designed to trick users into downloading a payload. The document body, though partially garbled, contains references to educational materials, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9023

Heuristics 3

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://uncpbisdegree.com/download3.php?q=mcgraw PDF link annotation
    • http://uncpbisdegree.com/download4.php?q=mcgrawIn PDF document text
    • http://drlogo.de/mcgraw/hill/mcgraw_hill_tennessee_bridge_math_answers_review.pdfIn PDF document text
    • https://ncablog.org/books/6d50a7/mcgraw_hill_tennessee_bridge_math_answers_review.pdfIn PDF document text
    • http://dostcan.net/read/doc/pdf/mcgraw-hill-tennessee-bridge-math-answers-review.pdfIn PDF document text
    • http://socobim.de/tennessee/bridge/tennessee_bridge_math_mcgraw_hill_answers.pdfIn PDF document text
    • http://buffszone.com/mcgraw-hill-tennessee-bridge-math-answers-review.pdfIn PDF document text
    • http://www.glencoe.com/sites/tennessee/student/mathematics/index.htmlIn PDF document text
    • http://bulizi.de/tennessee/bridge/tennessee_bridge_math_mcgraw_hill_answers.pdfIn PDF document text
    • http://www.foxcharlotte.tv/reads-online/mcgraw-hill-tennessee-bridge-math-answers-review.pdfIn PDF document text
    • http://www.beacons100.com/reads-online/mcgraw-hill-tennessee-bridge-math-answers-review.pdfIn PDF document text
    • http://quicktradeimpex.com/reads-online/mcgraw-hill-tennessee-bridge-math-answers-review.pdfIn PDF document text
    • https://ncablog.org/books/6d50a7/mcgraw_hill_tennessee_bridge_mathIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://www.wyzant.com/resources/answers/bridge_mathIn PDF document text
    • https://www.wyzant.com/resourcesIn PDF document text
    • https://www.wyzant.com/resources/answersIn PDF document text
    • https://books.google.com/books/about/McGraw_Hill_mathematics.html?id=dANFhYdKipcCIn PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=617350In PDF document text
    • http://go.microsoft.com/fwlink/?LinkId=521839&CLCID=0409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=246338&CLCID=0409In PDF document text
    • https://go.microsoft.com/fwlink/?linkid=868922In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=286759&CLCID=409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=617297In PDF document text
    • https://books.google.com/books/about/McGraw_Hill_mathematics.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC2 14100 bytes
SHA-256: b396365ac80bea1ce43c7a15f05da9555afb8c47a90e3c78d597e147ad2036a3
font_01_sfnt_off00009a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3C 8656 bytes
SHA-256: c8f8f33aad1e3de4c004a5d8c52cd4d412e1328bc168edc7193cd83a75d7e75a