Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a08ddcfda3c4762…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 18:45:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8ff520525d2d18b7e928cf6ee4a69531 SHA-1: e0a356d99998e8b7309eb266bf3a0641427c7a4f SHA-256: 9a08ddcfda3c47629f12e52f8de1a2b810784d7cac7995a7e3db5c5e8ea7b762
160 Risk Score

Malware Insights

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

This PDF document employs a common lure of free game currency and cheats to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn serves further malicious PDF files. The ML classifier strongly indicated maliciousness, and the document body contains multiple URLs pointing to similar scam content.

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/431946152/robux-earning-sites-game-hack In PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/how-to-get-free-items-on-roblox-2021-working_GM431946152.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/50-free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/free-robux-no-password-or-human-verification_GM431946152.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/free-roblox-users_GM431946152.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/how-to-hack-peoples-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/pet-simulator-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/scam-free-robux_GM431946152.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • https://jasabuatlabel.com/ckfinder/userfiles/files/roblox-guest-quest-hack_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_off00002ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF8 22388 bytes
SHA-256: ddcc43562a80a39ea4733ab08ac93193d4836ad1261320068624aba04c8afa9d
font_01_sfnt_off00006214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6214 18776 bytes
SHA-256: 2fadfd9a5a9d832f0e7c881f18a3f3e52f0cd87ddfd3a8c3e73cf34e1bc3b59b

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