Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf9446f2606c581e…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 09:37:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ab4efc57ccb01b6f8e134e8123e19ece SHA-1: 1e24a4b97d9228a537a0f95143b7035cd1d2b6af SHA-256: cf9446f2606c581e71d7dad7fe40485dd9e81842210d1a7fc3a844c94aa43615
160 Risk Score

Malware Insights

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

This PDF document employs a common lure of free game hacks and generators to trick users into clicking malicious links. The document contains multiple embedded URLs that redirect to potentially harmful content, including a known malicious redirector. The ML classifier strongly indicated maliciousness, and the presence of download button lures further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/hacks-para-el-roblox-game-hack In PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-op-weapons-in-your-hack_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-pool-tycoon-4-cheat-engine_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/village-coin_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/pubg-30-uc-free_GM1330123889.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/hacks-para-roblox-counter-blox_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-scp-hack_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/hack-my-game-xyz-coin-master_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
font_00_sfnt_off00003153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3153 22364 bytes
SHA-256: 65faba9d12f5adb1d614b3308bd947d68a00e2ca0237756f81f820254327f412
font_01_sfnt_off000062e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E4 18808 bytes
SHA-256: f0b5c441c0beb2708d2aea84f6a9bbe9a0b96b27480b4d8c2d232e0f85432bfd