Malicious PDF — malware analysis report

Static analysis result for SHA-256 41cbb18800322121…

MALICIOUS

PDF

35.0 KB Created: 2021-06-17 16:50:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8aa0d075f07ffa03994004a227ebea2e SHA-1: aa4ecc1d8bd7681681d1e7b36ae900359aa8bb93 SHA-256: 41cbb188003221219f430853739a66ca12d19971ba12aa834aa5adf985a99929
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to known malicious infrastructure. The document body explicitly mentions 'Lumber Tycoon 2 Hacked Roblox' and includes the malicious URL. This indicates a phishing attempt to trick users into visiting a potentially harmful site.

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/lumber-tycoon-2-hacked-roblox-game-hack In PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/coin-master-today_GM406889139.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/roblox-dungeon-quest-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/roblox-club-tesla-free_GM431946152.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/free-roblox-trades_GM431946152.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.adudubai.com/uploaded_files/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EB 22460 bytes
SHA-256: a5dde55034608a951f915bc06079bc261b3753dd0bc21687c4f44602d78276c2
font_01_sfnt_off000062f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F6 19348 bytes
SHA-256: c76aa3a0bba054868c9f3702f2e709bc97142dab45ec3fd105b30bf774516c01

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