Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f47f4418fd52fb…

MALICIOUS

PDF

31.2 KB Created: 2021-06-28 15:29:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f3d2943a9e846174892c326106524245 SHA-1: 7044c15cb77116a78ba0d59531386eadac8b22e0 SHA-256: 70f47f4418fd52fbdb57701364e7aae72d5e5f4b2913fc5c1266c3b790419c9a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links to a known malicious redirector disguised as a game hack generator. The document body and embedded URLs promote free game currency and hacks for popular games, aiming to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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/any-roblox-game-pass-free-script-game-hack In PDF document text
    • https://www.toyogas.com.tw/upload/files/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/install-coin-master_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/download-roblox-for-free-unlockable_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F75 22392 bytes
SHA-256: 5f27b4e6deef2e89d3a29f59ce11ebb78d56f9187a5289bbfd7ecfc20ddced31

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