Malicious PDF — malware analysis report

Static analysis result for SHA-256 df7279d6cbb88bcf…

MALICIOUS

PDF

36.0 KB Created: 2021-05-21 10:59:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b6bff6ba5c674f4fc2ccce3b212d2649 SHA-1: bd9626a3fc2bab196496ffd329aaf1fe4ae13e0b SHA-256: df7279d6cbb88bcf19594cf579016c6a1b3d1b1a56b779f041a28582361c2e39
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators' as a lure. The document body and heuristics indicate a clear intent to redirect users to malicious infrastructure, likely for further exploitation or malware delivery. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/431946152/how-to-hack-robux-game-hack In PDF document text
    • https://www.polyfin.de/images/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.polyfin.de/images/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • https://www.polyfin.de/images/minecraft-esp_GM479516143.pdfIn PDF document text
    • https://www.polyfin.de/images/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.polyfin.de/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3309 24284 bytes
SHA-256: 02ac63d5d885abcd3bebe5214f8729629544bacf9df27ff746e6457e9e6c6a8e
font_01_sfnt_off00006af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF6 18412 bytes
SHA-256: 799ae8847f356c5b4d712fc876b96dd84d848442331064266ecb6e470ae97e62

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