Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f442a40bb48952b…

MALICIOUS

PDF

43.1 KB Created: 2021-05-16 16:46:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 325e15fc753e793d9aec5b608a22b9fd SHA-1: 710bb4768ed4925f8696cdfe26e476295c30fe31 SHA-256: 1f442a40bb48952b50765f3d39adaab8d769e090afaf93342b156af604d022db
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body, though partially corrupted, contains URLs that are also listed as embedded URLs. These URLs likely lead to further malicious content or downloads, indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-coins-and-spins-coin-master-2021-game-hack In PDF document text
    • http://5prudov.ru/images/roblox-re_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/xray-hack_GM479516143.pdfIn PDF document text
    • http://5prudov.ru/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://5prudov.ru/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://5prudov.ru/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/free-promo-codes-for-robux_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_off000049ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CE 26156 bytes
SHA-256: cea8822552c0f8613e54bfc29ef7b4421328e331c9e041aae5f7d6764477ae52
font_01_sfnt_off00008585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8585 18460 bytes
SHA-256: 871f0cb0a27f8e5dd89901f10b004c29658dd5d4ba968b8e0fec3a5b4bbe6c5a

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