Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d309c88b05b1a9…

MALICIOUS

PDF

33.6 KB Created: 2021-07-03 18:55:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f79028c9b56f9920e8b4025f64b1208e SHA-1: 6b77929d276d97124d7cd7bb36e524e6ce3732ba SHA-256: 94d309c88b05b1a9bf53fa4bbe49c9439465fac1ea369d31a5312bca963bcd10
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game items and hacks to entice users. It contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/431946152/free-roblox-avatar-ideas-game-hack, which is likely intended to deliver a malicious payload or lead to further compromise. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-avatar-ideas-game-hack In PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-free-download_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/what-is-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-email-and-password-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-walk-through-walls-hack-cc_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/how-to-use-cheat-engine-on-roblox-swordburst2_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-lumber-tycoon-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-2021-cheat-engin_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_off00002bcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCB 22584 bytes
SHA-256: 78ec2114d6a35b4ffb0a66bff37ebb52ea64dea2ef7ef4529ae9431ee18310f2
font_01_sfnt_off00005e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E94 19040 bytes
SHA-256: ad2d59536519275d6c005bbb7f6b17868ed93de8c720afdca884edb772968032

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