Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff3674e2917c961…

MALICIOUS

PDF

45.3 KB Created: 2021-06-13 22:27:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 10fc8997bb7adcef6f9cd4d5bfe21c8a SHA-1: 8f4414b85b06ef88e4f236f05a44e2e91d9e820b SHA-256: 5ff3674e2917c9619c261f4d77b67c40251568bf4c6505eb991f25d442e24f96
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically advertising a "free generator / game hack" for Roblox. The embedded URL, http://netcdn.co/app/431946152/roblox-invisible-hack-game-hack, is associated with known malicious infrastructure. The document body, though heavily obfuscated, contains references to the same URL and appears to be a lure for game-related cheats, aligning with common social engineering tactics.

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/roblox-invisible-hack-game-hack In PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/hacking-commands-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/hacka-for-mobile-roblox_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/noclipper-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/bebe-rexha-i-got-you-cheat-codes-remix-roblox-id_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/how-to-get-robux-on-roblox-without-hacking_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/how-to-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/como-hackear-cuentas-de-roblox-como-amon_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/how-to-make-a-dll-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/trolling-outfits-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/develepor-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/roblox-vehicle-simulator-script-hack_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/como-conseguir-robux-gratis-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/simple-free-robux_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
stream_003_off00004da3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DA3 29184 bytes
SHA-256: 1740e8fdaaec87365167834dd05185b9ef9b169b10518d6c02861373083d9d04
font_01_sfnt_off00008e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8C 18416 bytes
SHA-256: a82ff246ba41f465b4409ec00e92eaa9e7fd2c8d398bd8aca397c21f12586b2b

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