Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7b71467c722611…

MALICIOUS

PDF

33.8 KB Created: 2021-06-28 23:22:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7ea0750bd0106b69ed14c44cb8140741 SHA-1: 3cc4cc1befd116491d3659dbc3a5c8be8bf4d941 SHA-256: 8e7b71467c722611ad44dc2275cc2ac11e42edf0bebfd2c519c72dafde8a6f37
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The document body and heuristics confirm the deceptive nature of the content, aiming to exploit user interest in popular games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/free-robux-25k-game-hack In PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/comment-hacker-un-roblox_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/discord-free-robux-server_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/getrobux-come_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/6-pack-roblox-shirt-for-free_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/how-to-download-hacks-in-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-spins-on-coin-master_GM406889139.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_off00002f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1B 21576 bytes
SHA-256: 2992a6bf3624582f67f256b7501eabf88021d045a814fa7253011525a9d05701
font_01_sfnt_off00005e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8A 19144 bytes
SHA-256: 67d73b843b1a56ba000c5a9d0798555c5d3d2dd5d430e0ba7d7028c367902533

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