Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee902d829edfb93…

MALICIOUS

PDF

35.2 KB Created: 2021-07-08 21:53:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 92ef16e35fe5231f775c7e0cf21af896 SHA-1: 6b04f0c89d4e117de857aa4c47b2ca7e38597504 SHA-256: fee902d829edfb938c9f72537d4e1b1c1dad811b71117096981153cd2948d6fa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to redirector infrastructure, specifically advertising 'free generators' and 'hacks' for popular games. The primary lure URL is http://netcdn.tw/app/406889139/download-coin-master-hack-mod-apk-game-hack, which is associated with malicious redirector activity. The document body and embedded URLs reinforce this theme, aiming to trick users into downloading potentially unwanted or malicious software.

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/406889139/download-coin-master-hack-mod-apk-game-hack In PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/roblox-obby-gives-you-robux-for-free-no-password-required_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/creepy-hacker-roblox-face_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/coin-spin_GM406889139.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/como-ser-hacker-en-roblox-prove-it_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/how-to-get-free-robux-only-on-computer_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/www-robux_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/free-earn-robux_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/como-tener-robux-gratis-sin-hacks-ni-servicios_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/why-do-robux-hacks-ask-for-verification_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/wurst-115_GM479516143.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://cartoriogoianira.com.br/ckfinder/userfiles/files/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F8 22980 bytes
SHA-256: 575c80b581ff778bee80a45a8bf7a30ce2076156d113039eb380d55fe1242d5b
font_01_sfnt_off00006592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6592 18760 bytes
SHA-256: a9106ec8bdb2ef00eddd29af2fd5eb663302a9539c133b1226910953e26aec8b

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