Malicious PDF — malware analysis report

Static analysis result for SHA-256 4989291c38d576dc…

MALICIOUS

PDF

34.7 KB Created: 2021-06-19 01:51:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: dfb29f2920d362e8cf30aa8bbe87361c SHA-1: cc9591956e88f9050e8ec866cd96948008485deb SHA-256: 4989291c38d576dcdca6a521f0ca5d4d6e59e6d8f665d70bb599c138f6c8b4c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The primary lure URL is http://netcdn.co/app/431946152/hack-vehicle-sim-roblox-game-hack, which is flagged as a malicious redirector. The document's content and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/hack-vehicle-sim-roblox-game-hack In PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/roblox-jailbreak-money-hack-download-free_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/how-to-hack-roblox-jailbreak-money-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/roblox-free-items-script-pastebin_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-leval-7-exicuter-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-robux-addons_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/win-free-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
font_00_sfnt_off00003047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3047 22316 bytes
SHA-256: bd82041bdd2fe2e54246a24143a798e2ab7bce44bf94257da8d34afb0d41d665
font_01_sfnt_off00006200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6200 19336 bytes
SHA-256: cc200b35c37a45d9338bbadb7827380dbcad94776f4eabee47b002ccf6c7feb3

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