Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef7626128aa9bb2…

MALICIOUS

PDF

42.3 KB Created: 2021-05-15 14:35:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 970ca6a045ef478619fb0fb71d617c9a SHA-1: 02959099465c5991622358f4b1714e02da5309af SHA-256: cef7626128aa9bb249338e65e79088a0feb145c90f8b88ee9c53cb37c3f74671
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded URLs and a visual download button, strongly suggesting a lure to download further content. The ML classifier also flagged this PDF as malicious with high confidence. The presence of links related to game cheats and hacks indicates a social engineering attempt to trick users into downloading unwanted or malicious files.

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/479516143/minecraft-windows-10-mod-menu-game-hack In PDF document text
    • http://optiquedelavaunage.com/images/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-hack-tool-v1-9-download-free_GM406889139.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_off00004a8c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8C 24716 bytes
SHA-256: 2cc1a016507a27bd5acb721d29f30ee736f96d28d8c64ca4b02d2a6670076a85
font_01_sfnt_off000081d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D4 18664 bytes
SHA-256: d514bf315b41fa54fe0c50a97b4da26b79196549822ea3c6d635b98116ec41ec

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