Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee67655385d52e6…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 02:47:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: cf54bd948bf7700fd4422f62087105d1 SHA-1: a50423bf441546e87cbce325ff7a8860014cf6d6 SHA-256: 6ee67655385d52e65ae4a1a508ac4ac2f48b24d8062bf790b1063c8db665cda3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector, disguised as game hacks or generators. The document body and embedded links strongly suggest a lure to trick users into visiting malicious websites, likely for credential harvesting or further malware delivery. The ML classifier also flagged this PDF with high confidence.

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.tw/app/431946152/best-free-roblox-outfits-game-hack In PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/arcane-adventures-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/jailbreak-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/como-conseguir-robux-gratis-en-roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-do-you-get-robux-for-free-on-ipad_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/cheat-roblox-autocloc_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-hammer-simulator-free-vir-server_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/ash-greninja-free-shopping-in-roblox-on-roblox-shopping-shir_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/tiktok-free-followers-instantly_GM835599320.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-speed-hack-android_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/roblox-hack_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_off000030f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F3 22172 bytes
SHA-256: 9b6213505217c22e04d90ba413a066b1428928e69c4a538c68478df2319b61ee
font_01_sfnt_off00006221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6221 19012 bytes
SHA-256: fd2be7b501cc1ddbfc061facd5d56eeae4294648e0a008f2ae7c9284085667e2

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