Malicious PDF — malware analysis report

Static analysis result for SHA-256 0914885a848197eb…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 21:32:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 353f2b9542497c8d761c7e171146079d SHA-1: 7e9bee329f7917df105bcb3765540573bfd5e2fd SHA-256: 0914885a848197eb991c6821108f8284946a7428371fc887a5ca0181ba552aa7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirector lure, pointing to malicious infrastructure. The document body and embedded URLs reinforce this, indicating a social engineering attempt to trick users into visiting a malicious site. The ML classifier also flagged this PDF with high confidence.

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/android-fast-roblox-hack-2021-game-hack In PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-gamemappses-roblox_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-free-wings_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/redeem-code-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-military-simulator-hack-mecha_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-louie-vuitton-free_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/hack-roblox-jailbreak-noclip-2021_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/websites-that-will-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/coin-master-levels_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/give-me-robux-now_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_off00003066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3066 21804 bytes
SHA-256: 91bcd8b6d181447a670038b28b8b3e67957379f3e41714a9e29c43479b28fa59
font_01_sfnt_off00006074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6074 19620 bytes
SHA-256: 6372a284844578f324e3335b44be6f82911d03e9a4a757d217c76a7e52ae993d