Malicious PDF — malware analysis report

Static analysis result for SHA-256 49697b926b8cb04e…

MALICIOUS

PDF

32.7 KB Created: 2021-07-04 01:48:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8cd59605d54eded4fdc1dc2f62423bba SHA-1: 1f677e4efeb409ab58a6af170bba24ddd121eb2f SHA-256: 49697b926b8cb04e32f902c7ee58ae5cbb1ec86374f1a30b90e10837b8996fa8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks for popular games like Coin Master and Roblox. It contains multiple embedded URLs, including a critical link to a known malicious redirector at http://netcdn.tw/app/406889139/coin-master-spins-free-2021-game-hack. The document's structure and embedded links suggest it is designed to lead users to potentially malicious websites, likely for credential harvesting or further malware delivery. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/coin-master-spins-free-2021-game-hack In PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/roblox-avatar-creator-free_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/how-to-hack-a-roblox-account-password-2021_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/how-to-get-free-robux-without-getting-an-app_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/how-to-get-a-free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/free-robux-games-on-the-top-page_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/how-to-buy-free-gamepass-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/how-to-get-free-unlimited-robux-glitch_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/shirt-roblox-2021-free-dowload_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/launcher-hack-roblox_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_off00002b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B63 22196 bytes
SHA-256: 4925c4a2b401d0eb71b76c03b54ed490d91e7ead9252658676ac57dfbdd0ee08
font_01_sfnt_off00005c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C60 18576 bytes
SHA-256: 75eaed8ad81f29eb71b64302d2ecfb3aff996f5f9f7195af6181786e7fe44cb6

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