Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b98d0ec40a8d7c…

MALICIOUS

PDF

43.9 KB Created: 2021-06-11 13:31:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fe480ff7f68dfdec2446d88c22a6f11f SHA-1: b51295bff90ed8c66917512c628737f4fec2dd3b SHA-256: c7b98d0ec40a8d7c32ed93e2ce5881b825274d85052c09ab1aefa4f365eec071
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and generators to entice users to click on embedded links. The links redirect to known malicious infrastructure, indicating a phishing or redirection campaign. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit vulnerabilities or deliver further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/roblox-sword-simulator-admin-hack-youtube-game-hack In PDF document text
    • http://bgnails.nl/images/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/military-sim-hack-roblox-vikinglaw_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/is-pokemon-go-free-on-iphone_GM1094591345.pdfIn PDF document text
    • http://bgnails.nl/images/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/comment-maitre-de-dinosaure-dans-free-dino-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-credit-card-payment-download-free_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/easy-free-robux-game_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-apps-that-work_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_off00004e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E1B 24836 bytes
SHA-256: 4737b55cce6a2f47b6b9018ee83a0c8b9a1f1f9e29765bd8a1188fffaa52ebcf
font_01_sfnt_off000085a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A9 19304 bytes
SHA-256: 91a710eb0f1f09340cdfe7f8d69bfa3a52417c2db0ce017b9d5e9b14de7533e9

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