Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa7dd77743dfc688…

MALICIOUS

PDF

35.5 KB Created: 2021-07-01 08:44:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7844aa22dcc19e9bbfe6d515d02a3f33 SHA-1: 84c4d1cfd99eb7acadb451bc2098719d4e26b091 SHA-256: aa7dd77743dfc688640b5de4346ed04ae4a318fbae2d95ce6bbbf9ec6dd41b94
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to click on these links, likely leading to further malware downloads or phishing attempts.

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.co/app/431946152/the-neighbourhood-roblox-money-hack-pastebin-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/comment-hacker-roblox-avec-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/secret-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-codes-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-counter-blox-esp-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/i-got-hacked-and-cant-play-games-now-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-accounts-with-robux-discord_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-accounts-with-robux-real_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/april-fools-hack-2021-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/quiz-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/gratis-und-sicher-free-robux-bekommen-hacking_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/tiktok-free-fans_GM835599320.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_off000030da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DA 22576 bytes
SHA-256: 9a9f7efffb9535e652f58dda1e6a05e5976b05aee28f04873aa815fb0a7c9737
font_01_sfnt_off00006357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6357 19892 bytes
SHA-256: 1c58ae6e02e2623082d926fdfe9003c95fde3991efceaa9a18426d31c6ae1367

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