Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4604c39137567b…

MALICIOUS

PDF

36.6 KB Created: 2021-07-03 17:46:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0f98a53022d6a38493942016ff19ad28 SHA-1: 1ec1d19c023036308f6d8b3ce844e20f1fb83cd6 SHA-256: cc4604c39137567b44d6e53155e1e79651c9f6f2553b5cabe2245a92f8f235f7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically http://netcdn.tw/app/406889139/archery-master-3d-coins-hack-game-hack, which is presented as a lure for game hacks. The document body and embedded URLs reinforce this theme, aiming to trick users into clicking through to potentially harmful sites. While no scripts were extracted, the presence of malicious links and the lure-based content strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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/archery-master-3d-coins-hack-game-hack In PDF document text
    • https://domc.tw/upload/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://domc.tw/upload/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • https://domc.tw/upload/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/studio-free-10-000-robux-lim_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/how-to-get-free-robux-apex-spice_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • https://domc.tw/upload/files/roblox-2021-where-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://domc.tw/upload/files/minecraft-tools_GM479516143.pdfIn PDF document text
    • https://domc.tw/upload/files/free-robux-codes-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/roblox-galaxy-hack_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://domc.tw/upload/files/how-to-get-free-pets-in-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/roblox-i-got-rthro-packages-for-free_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • https://domc.tw/upload/files/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://domc.tw/upload/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://domc.tw/upload/files/www-bandicam-com-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD1 22168 bytes
SHA-256: 3688476adb60a6d05428659281c6ef4301a8ae8ecdfc2d6662c787a8ffc64e70
font_01_sfnt_off000060f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F4 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00006ad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD9 18692 bytes
SHA-256: 5df6ebb19e7bc9bbfd1ae1cafc0ab07ff0a88d0a6634680948d9e90696a55782

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