Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aa9780a0c2b5034…

MALICIOUS

PDF

46.7 KB Created: 2021-06-09 03:14:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-27
MD5: 8e01db0d8aa03ecb5751a992c6aee5f7 SHA-1: 5971c511d6bb265379ff771ab13356a3bb524f0a SHA-256: 2aa9780a0c2b503406f95a80551f299d2d4b4cb70ea3729b67c630f00af53d34
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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/free-admin-commands-in-roblox-game-hack In PDF document text
    • http://bilhetim.com.br/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://bilhetim.com.br/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/coins-master-hacks_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://bilhetim.com.br/images/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/roblox-hack-tools-download_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A7 24652 bytes
SHA-256: 5dcb5beb1eb5e063654825cb262340035dd91e6f1bb55680a1941142087f8492
font_01_sfnt_off0000888d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888D 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off0000924e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x924E 18728 bytes
SHA-256: 989462b2cf53fdf7453e5967577129071dff910c0c3c26bc0233a1261f65a76d

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