Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2205200f43864f3…

MALICIOUS

PDF

35.1 KB Created: 2021-07-02 06:19:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 24c61655318e77db8c449c0475b2e9ca SHA-1: 719dfc66f78c94f339cb0820f0f5d8621144e917 SHA-256: a2205200f43864f3537b3b761eb7bb16c61555ead17d410de31332ce63945467
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains embedded links that redirect to a malicious URL, masquerading as a game hack generator. Heuristics indicate the PDF is designed to lure users with a download button, likely leading to the download of malicious software. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or malware distribution scheme.

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/descargar-roblox-hack-apk-game-hack In PDF document text
    • https://library.fdk.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-robux-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-items-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/raspberry-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/what-does-ce-stand-for-the-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/youtube-how-to-use-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-youtube-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-no-survey-hack_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-stuff-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-roblox-cards-numbers_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-roblox-account-hacker_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.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_off000031c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C6 22468 bytes
SHA-256: 4fd04e3695b2cd3f803326d0b147ce91431629c1d53f8fbca59f9ea00ecb3485
font_01_sfnt_off0000640d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640D 19000 bytes
SHA-256: 0d72b7958af06d26e93001513d865e3832dfb2de1ae6fa213175eeff9bfa3dc7

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