Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd3ab552ee90c61c…

MALICIOUS

PDF

35.5 KB Created: 2021-06-26 02:24:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: eea352d07f1c372fbcd4f49d060b0269 SHA-1: e8e2185be57d4726e4c7d6031fa169cf3fbcb82e SHA-256: dd3ab552ee90c61c5ae186358707fcdc4eebbfd18ae606743b14ef13239c5271
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body and embedded URLs reinforce this lure, suggesting the primary goal is to trick users into visiting a malicious site. No scripts were extracted, but the PDF structure and embedded URI indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/csgo-roblox-hacked-client-download-game-hack PDF link annotation
    • https://www.hearcolors.com.mx/img/blog/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/hack-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/roblox-is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-in-2-minutes-zephplayz_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-level-3_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-2021-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
font_00_sfnt_off00003350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3350 22228 bytes
SHA-256: f5b89209f4928369e3e816b7aac5a260d07baaeed1fe45e3769ea9ff4b87fe9c
font_01_sfnt_off000064b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B0 19384 bytes
SHA-256: 7c6a5874818df3a12f6e2d767e2a3c2166a6bcc9728e591cad9063be7dca5eea

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