Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c4ed98a6783258a…

MALICIOUS

PDF

49.7 KB Created: 2021-06-07 10:00:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f3799734d4405b7cb34c53a7b751a11a SHA-1: d2542321a95c2846d960925108fdc4911c390630 SHA-256: 0c4ed98a6783258a9be313380c96c66f39929fc100aecab61f1cbc8438d90017
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting game hacks and free in-game currency. The heuristic firings confirm these links point to known malicious redirectors and a lure for game-related cheats. While no scripts were explicitly extracted, the nature of the embedded links and the document's content suggest an attempt to trick users into visiting potentially harmful sites, likely for further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/counter-blox-roblox-offensive-hack-noclip-game-hack In PDF document text
    • https://www.campguru.co.za/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.campguru.co.za/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://www.campguru.co.za/images/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://www.campguru.co.za/images/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • https://www.campguru.co.za/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.campguru.co.za/images/is-tiktok-app-free_GM835599320.pdfIn PDF document text
    • https://www.campguru.co.za/images/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • https://www.campguru.co.za/images/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • https://www.campguru.co.za/images/jailbreak-script_GM431946152.pdfIn PDF document text
    • https://www.campguru.co.za/images/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.campguru.co.za/images/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • https://www.campguru.co.za/images/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://www.campguru.co.za/images/give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.campguru.co.za/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://www.campguru.co.za/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.campguru.co.za/images/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://www.campguru.co.za/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://www.campguru.co.za/images/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://www.campguru.co.za/images/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.campguru.co.za/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F63 28632 bytes
SHA-256: 61e87c628be6e87eaaa20409fd3186f462300dcdcf61263db50f3d15c6c4120d
font_01_sfnt_off000090de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90DE 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009def.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DEF 18836 bytes
SHA-256: 5dba220bd1ede6928555bcb9866a5ff6151a5960c6f638dfee2abf4fb6d6902c

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