Malicious PDF — malware analysis report

Static analysis result for SHA-256 4239eda41d8d9a6f…

MALICIOUS

PDF

30.0 KB Created: 2021-07-18 22:51:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3cb309160ca0e6cd915fc3da50d4dfc2 SHA-1: ff7002266d440794827d97aba9cd033c24dc2bab SHA-256: 4239eda41d8d9a6fde95284f92143ee7c5df88db7e74b7a8133cb3fdcc8bc1af
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free Minecraft Accounts 2021' generator, which redirects to a known malicious URL. This suggests the document is intended to trick users into downloading a malicious payload. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0556

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://netcdn.tw/app/479516143/free-minecraft-accounts-2021-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000022f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22F9 22024 bytes
SHA-256: e4efa9693cf7c28cb228ce5cf06534857a5218e0d95506a274bb404eac305491
font_01_sfnt_off000053b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53B0 18252 bytes
SHA-256: a7a52ec6c2bb565f332a4905da6a686ee34bc05df98df468ad89fd298f001152

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