Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a922201614f5bfc…

MALICIOUS

PDF

39.8 KB Created: 2021-05-10 13:33:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7ef1c2935ea0839d359fbd09a1b8f29d SHA-1: 74ce920c879e2d844ad3b2aae86c5bc4973edd67 SHA-256: 2a922201614f5bfc01b03c4d927103f032c398eb0d6d91c7d4f0b78d77affa5f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary malicious link identified is https://netcdn.xyz/app/406889139/coin-master-apk-game-hack, which is associated with known malicious redirector activity. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering lure designed to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9459

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/406889139/coin-master-apk-game-hack In PDF document text
    • https://ase-sinaloa.gob.mx/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/free-robux-generator-2021_GM431946152.pdfIn 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_off000039aa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x39AA 30352 bytes
SHA-256: cf8f4c904760d6f7a9934139f45c7c1b866149b66c946b4a72f4a7ad09e9bddb
font_01_sfnt_off00007b11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B11 17892 bytes
SHA-256: 60a225a48b1b678f90e38b10bd9e6f9d01ffb5102f34dbcee4b716dbf4a04973

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