Malicious PDF — malware analysis report

Static analysis result for SHA-256 1adb543934a67704…

MALICIOUS

PDF

47.1 KB Created: 2021-06-10 19:23:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d7443e420224de1391f9769e5da94fd0 SHA-1: e64d2a3e9f810755d6289a2fc067aeac0e8f91e4 SHA-256: 1adb543934a67704d3a5b041f98a68fc3ffd2971f59d2b994a894547cf7ea85d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, disguised as a 'Roblox Anti Cheat Update' and game hack generator. This lure is designed to entice users to click the link, which likely leads to a further malicious download or exploit. The presence of multiple links to similar game-related lures suggests a campaign focused on tricking users interested in free-to-play game advantages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/roblox-anti-cheat-update-game-hack In PDF document text
    • http://modlingua.com/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://modlingua.com/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://modlingua.com/images/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/ancient-earth-hack-roblox_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://modlingua.com/images/rbx-com_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/free-roblox-hack-inspect-copy-and-paste_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://modlingua.com/images/free-robux-ios-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/how-to-hack-roblox-pepol-haeds-of_GM431946152.pdfIn PDF document text
    • http://modlingua.com/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://modlingua.com/images/coin-master-free-mighty-lion-card_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_004_off000052f6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52F6 28648 bytes
SHA-256: 5f83b178535d27998688c11ccd11af6c9983e56d76bfe4c735647d84f46a9422
font_01_sfnt_off000093b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B8 18936 bytes
SHA-256: 19467a3d521aaece0013359391b26a5379b70491eb8a7f35d6e76b74a71fdc2b

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