Malicious PDF — malware analysis report

Static analysis result for SHA-256 f53901a2f39d00d1…

MALICIOUS

PDF

34.9 KB Created: 2021-05-12 05:06:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 168ad8cdd60fe8b6be88e4054ac21242 SHA-1: 63a98e84540995459eb9b1c366107b900d4a3bab SHA-256: f53901a2f39d00d1dbcebf3cbfc36c61d53c9a342c4fef4c5c7e7dbc8de2fa93
130 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically advertising a "Hack Client" or "Minecraft Generator". The presence of a "download button" heuristic further supports the lure. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest an attempt to deliver a malicious payload or redirect the user to a site that will exploit their browser.

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

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 https://netcdn.xyz/app/479516143/hack-client-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
stream_003_off00003140.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3140 24548 bytes
SHA-256: 3b41ddca2593bc48bbf3ca64deb1a4d14d0cddb6e319919cc2c1871f809786e5
font_01_sfnt_off0000687e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x687E 17812 bytes
SHA-256: af75091dd1ed9ff92a17a8bd9a3d097f77d0b86e0c60fbcf01e38630a3bb1c5f

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