Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f2f157d3d59ac0…

MALICIOUS

PDF

36.4 KB Created: 2021-07-04 08:03:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7b8ad496908a53e2aacd790d53a1fee7 SHA-1: 2e45661f94f05cfd559c7a5941b3b9011d271c24 SHA-256: d3f2f157d3d59ac060032f6167fd618125cca354edb8973349ad09f584e9e22b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a prominent link to a website promising game hacks and free currency, identified by the 'PDF_GAME_HACK_REDIRECT_LURE' heuristic. This lure is designed to trick users into visiting a potentially malicious URL, which is likely the primary goal of this document. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this PDF is part of a phishing or malware distribution scheme.

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-gold-cards-link-2021-game-hack PDF link annotation
    • https://www.yatrikathmandusuite.com/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/what-is-wurst_GM479516143.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/com-roblox_GM431946152.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • https://www.yatrikathmandusuite.com/userfiles/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35EA 23132 bytes
SHA-256: d1230083ab45b4752d36eb41d733580e9bd81e52422a7c27fabe976cc081d110
font_01_sfnt_off000069f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F7 18816 bytes
SHA-256: a09a8837ace1bec76e2012f82a307e89209edfbda6266aa859e2874e1a9d6b2a

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