Malicious PDF — malware analysis report

Static analysis result for SHA-256 7deeea766aa3e31f…

MALICIOUS

PDF

33.4 KB Created: 2021-07-05 23:53:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1620f1808690064b67b18379d97f3036 SHA-1: fc0d99c5d0899cb8bc01fa47eb3478fb2e3bf28f SHA-256: 7deeea766aa3e31fd95e3cc0e0284e330b149281d55cecd225657021d38c1dbe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body also contains multiple URLs related to game hacks and free in-game currency, suggesting a social engineering lure. The primary URL, http://netcdn.tw/app/406889139/daily-coin-master-game-hack, is likely the malicious destination. No scripts were extracted from this sample.

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/daily-coin-master-game-hack PDF link annotation
    • https://jogjaindotrans.com/ckfinder/userfiles/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/roblox-character-free_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/void-star-jetpack-simulator-hack-script-roblox-2021_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/get-100-000-000-000-000-000-robux-for-free_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/code-free-robux_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/free-coins_GM406889139.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/roblox-hotline-miami-hacked_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/roblox-gift-cards-codes-free_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/general-roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/roblox-images_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/www-roblox-robux-hack-com_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_off00002f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F71 21956 bytes
SHA-256: b8c1876ad7b12f48f76cff1bffcc9a15271032419ac1c593dd681bbfc24a3ce4
font_01_sfnt_off00005fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE9 18256 bytes
SHA-256: 4b4ebf8e9dec0048657ccfe2daaf89c536ab9e799ac439a9c3dc84db67dbacbd

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