Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa83ae93b288a4b3…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 12:25:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 434a31dc7c7635027319d34411478aaa SHA-1: 2e28a68c6f71c8456e07be84779d4ea99860a322 SHA-256: aa83ae93b288a4b3e1e75bd1be5d5ef56df708344b8875cb555262c6498f385f
180 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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-100-free-spins-on-coin-master-game-hack In PDF document text
    • http://217.165.206.12/userfiles/files/roblox-mow-my-lawn-hack_GM431946152.pdfPDF link annotation
    • http://217.165.206.12/userfiles/files/fly-hack-roblox-jailbreak-download_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/roblox-cc-hacks_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://217.165.206.12/userfiles/files/easy-roblox-today_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_off0000339a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x339A 22592 bytes
SHA-256: 0816513b68fca041fa30b2811f4c99524d2f78e8daa93b0b65392d6ef7a713cf
font_01_sfnt_off000065f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F9 18616 bytes
SHA-256: 75e6ca0d846814030aeb8d238a6779e7a1e1c8622c374b69a8320c66161e23d2