Malicious PDF — malware analysis report

Static analysis result for SHA-256 50750d2cce29cd1e…

MALICIOUS

PDF

56.6 KB Created: 2020-04-16 11:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 818da76fdb9c7c5848b2101a5ed953cd SHA-1: 2205885e3f59166c5dd29cecfef0cd370e03e9ae SHA-256: 50750d2cce29cd1e61e9d9cf97c3163212eb08461c97530e2715f32809fcc4b5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: User Execution

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm for SEO manipulation or to host malicious content. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's content is designed to trick the user into installing software, a common precursor to malware delivery or credential harvesting. No scripts were extracted from this sample.

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://hkgphp.com/uploads/1/3/0/7/130776457/130776457.html#arcgis+server++trial
    • http://ketomacro.com/uploads/1/3/1/4/131438093/zumibuvama.pdf
    • http://kogwoodworks.com/uploads/1/3/1/4/131453980/49c63dd.pdf
    • http://easyrisemarketingagency.com/uploads/1/3/0/8/130874349/3727317.pdf
    • http://thepeaktutoring.com/uploads/1/3/1/4/131453414/8750844.pdf
    • http://fatgirlbeauty.studio/uploads/1/3/0/3/130313243/bidofodoxuv_gokebi.pdf
    • http://hyeangel.com/uploads/1/3/0/5/130588484/tifiles.pdf
    • http://sevenphotographybyjessica.com/uploads/1/3/0/6/130620962/87159.pdf
    • http://barerebels.com/uploads/1/3/0/9/130969577/wukema.pdf
    • http://mrhandgun.com/uploads/1/3/0/4/130476403/jamewoxagikiso-tuwupubo-nopizoruwinom-worewadig.pdf
    • http://arrowaddictstv.com/uploads/1/3/1/4/131406564/woxif_zedeli_bafixafeniduje_foranukal.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b81a.bin
7f42e26a65d43560586ca7b9313a826e6f1572a52bf450f81fc77ea1ec421f79
pdf-font-stream PDF embedded font (sfnt) at offset 0xB81A 7900 bytes