Malicious PDF — malware analysis report

Static analysis result for SHA-256 c47004e8cc55bcd9…

MALICIOUS

PDF

33.2 KB Created: 2021-06-21 04:01:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e1495e9eed2c08bc3004a2ab37573bb5 SHA-1: 21ee887192651dfcd24e85ae5326068822a9d9d6 SHA-256: c47004e8cc55bcd9fe971662052ca39cfebabbd43d63a07ab38d8d7d9efc09f4
122 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 5

  • 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.
  • Invisible PDF links to CAPTCHA-themed web lure high PDF_CAPTCHA_LINK_LURE
    PDF contains invisible clickable link annotations that point to a CAPTCHA/capcha-themed web path. This is a common phishing and ClickFix-style routing pattern: the PDF itself is inert, while the linked page performs the credential prompt or fake verification.
  • 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/free-roblox-colouring-pictures-game-hack PDF link annotation
    • https://audev.com/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://audev.com/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://www.audev.com/images/hack-client_GM479516143.pdfIn PDF document text
    • https://audev.com/images/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/www-robux-com_GM431946152.pdfIn PDF document text
    • https://audev.com/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://audev.com/images/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/free-robux-earn-robux_GM431946152.pdfIn PDF document text
    • https://audev.com/images/free-robux-with-recapcha_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://audev.com/images/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://audev.com/images/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://audev.com/images/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://audev.com/images/roblox-juwelen-hack-mad-paintball2_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/fr-ee-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • https://audev.com/images/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/roblox-free-robux-pastebin-2021_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.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_off00002d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4F 21488 bytes
SHA-256: 3ce23ec6fa9b5d84d96756566480c6fe91cfa8c5f0cba8b8809fdb9e90693702
font_01_sfnt_off00005c2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2E 19168 bytes
SHA-256: e7c37d3d59c8cf863e2390fdc80dcd5a4b6c766dee6ce207729c83148a0b72b3

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