Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f09278d6de3a79c…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 09:34:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: df9a4f2b381c64105b50a37ef01d5e7b SHA-1: 15b767a299954efab7578eb6ef765354bea77702 SHA-256: 6f09278d6de3a79c25fd50d6291eaedae916608f1e28fd326199ef7ea7a14de4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.tw/app/406889139/coin-master-free-spins-hack-game-hack PDF link annotation
    • https://marstechmedical.com/uploaded_files/userfiles/files/how-to-cheat-in-roblox-boxing-simulator_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-robux-generator-no-survey-legit_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/roblox-cheat-codes-for-iphone_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/cheat-admin-roblox-prison-life-v202_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/what-happens-if-you-hack-on-roblox_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/roblox-microsoft-rewards_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_002_off0000339a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x339A 23256 bytes
SHA-256: 705d48c94dc25d3fa4ea23b97812f7bb789b921eaa9df2f9e2fe0b27a4099561
font_01_sfnt_off00006833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6833 18344 bytes
SHA-256: bda74eba5f039297e511dddd57f660cdccd001576784cab1ba2dc4ebdf08fb85

Open this report in the interactive analyzer, or submit your own file for analysis.