Malicious PDF — malware analysis report

Static analysis result for SHA-256 336622d505872c9d…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 16:45:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 25055d026a371fffe4edd744f7f21056 SHA-1: a6d94bd182969247aff0acc2ec9514fd71a3fe80 SHA-256: 336622d505872c9df07c7768487b806b0fe67133cc08dca78897c65f489e59b4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, specifically advertising 'free generator / game hack' lures. The document body and embedded URLs reinforce this theme, aiming to trick users into clicking through to potentially 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.tw/app/406889139/hack-coin-master-free-spins-game-hack In PDF document text
    • https://www.metal.hr/files/free-robux-clibait_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/robux-free-hack-xyz_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-cheat-engine-god-mode_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-be-sans-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/kitty-ears-free-roblox_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_off00002ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DDF 22580 bytes
SHA-256: 742d784698ac73883870f5868266056b51ded7401128d675bedcc6d5c8d4f065
font_01_sfnt_off0000600d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600D 18344 bytes
SHA-256: b719b9ed07640e3019d175b5875a3ac233088e4e0000cfcd6dccfc2cfac1c44f

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