Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f4d734dd44bab55…

MALICIOUS

PDF

35.7 KB Created: 2020-06-22 07:05:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9bf4aa34524c5420b1e0236a70a6adb7 SHA-1: 42b02bc85d8fd2717e49dd4160487801e19c44b6 SHA-256: 3f4d734dd44bab551a1c95a9487fde00ac1615df51f07b09b7ef24da578e3f12
102 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF document employs a social engineering tactic by claiming it cannot be opened and instructing the user to install a browser update. It contains a large number of embedded URLs pointing to external PDF files, likely intended to host malicious content or redirect the user to phishing sites. The primary lure appears to be a fake browser update or plugin installation, a common method for credential theft or malware delivery.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://mta-sts.mail.jmstudiosllc.com/uploads/1/3/0/7/130740464/130740464.html#pdf+will+not+open+in+chrome
    • http://leadingchristianity.com/uploads/1/3/0/2/130291624/rodapebozopixit.pdf
    • http://corporationpablo.org/uploads/1/3/0/2/130289554/xedusirixosok-zusazigif-kuvarijire.pdf
    • http://matte-leist.ch/uploads/1/3/1/6/131637854/padibuzoxipajepude.pdf
    • http://millerhahn-wedding.rominastiebenphotography.com/uploads/1/3/0/7/130739561/bedokodo.pdf
    • http://blakamerica.com/uploads/1/3/0/7/130775497/laxefapuz.pdf
    • http://accountabilityllc.com/uploads/1/3/0/4/130483638/79c9f7709d1d.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005350.bin
d243e54623cf8084643b525a1923c1311f3d4858a5ca266f4326cd8464755206		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5350 4888 bytes
font_01_sfnt_off000063c6.bin
27c197538cd8ac01e895d7ed0648a5de9c4e01fb8dbfb40eb3792f2dbb4283bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C6 9096 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.