Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6cbfe3daf7bf09…

MALICIOUS

PDF

36.6 KB Created: 2021-07-05 08:31:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 26119a6e1027907cbda506794512b696 SHA-1: 529225b09bf689cceaeab1e3a31b1ee00910c8f3 SHA-256: 9e6cbfe3daf7bf0975c31f99d99f2855d4ddf6a931b988f8a4bb1be477372794
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains multiple links, including one identified as a known malicious redirector, designed to lure users into clicking on game hack generators. The document body and heuristics confirm the intent to direct users to external sites for potentially malicious content. No scripts were extracted, and the primary threat appears to be user interaction with malicious links.

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.tw/app/406889139/how-to-get-free-spins-on-coin-master-2021-game-hack In PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-hack-exe_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-build-a-boat-for-treasure-money-hack_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/how-t-get-free-robux-for-computer-nly_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/hack-cuenta-roblox-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/oneapprewards-com-roblox-hack-robux-picker-sessid-4s45w24_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/robux-cheat_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/how-to-get-free-robux-in-roblox-using-a-phone_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/pubg-uc-unlimited-free_GM1330123889.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-robux-no-hack_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/cheat-robux-roblox-2021-free_GM431946152.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/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/coin-master-free-coins_GM406889139.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
stream_002_off00003607.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3607 23536 bytes
SHA-256: 542cd4b952129a18b377b716cf74c68aa1beaa7c282cce372632068d6ba3bb61
font_01_sfnt_off00006b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B39 18740 bytes
SHA-256: 0260418c40462ede441e23edbbaa28f8ef5f7472ee43e2d563702d50e072c039

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