Malicious PDF — malware analysis report

Static analysis result for SHA-256 2033a38d543517d3…

MALICIOUS

PDF

33.8 KB Created: 2021-07-03 20:17:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 26b13147cb820a4a447bececb982eb1b SHA-1: 76ede62e2705ec2fe922ab80a411e334ca2d280f SHA-256: 2033a38d543517d31ccdfe4aadc4deb944ab4ffbc6cd79ada715181939af3d96
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for game hacks and generators, directing users to a known malicious redirector. The embedded URL http://netcdn.tw/app/431946152/free-roblox-codes-game-hack is associated with malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to facilitate initial access via user interaction with the malicious link.

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/431946152/free-roblox-codes-game-hack In PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/free-robux-games-on-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_off00003015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3015 21724 bytes
SHA-256: 5b5f84f9ce3d75357345ca6c520e85be5180d3f00e22fdc5fa15b980e7b633fc
font_01_sfnt_off00005fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAB 18824 bytes
SHA-256: 1a88528145c26efb1d07b3d490b3d5194077b7b06bf2b8f33c321d794e64caa0

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