Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7554315e0c551a9…

MALICIOUS

PDF

46.3 KB Created: 2021-05-15 17:02:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6e39c5472d5b305ffd7140b9739d433c SHA-1: 33fdf47abdc06e92eea93eb4cf98f23dc1f2499c SHA-256: e7554315e0c551a9aaa3261f078a6fd73c8c2eb60989fc183ccae7c6ddc74913
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free in-game currency, redirecting users to malicious infrastructure. The embedded links, such as 'https://netcdn.xyz/app/431946152/roblox-booga-booga-hack-game-hack', are indicative of a phishing or scam attempt designed to entice users to click through. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit user interest in games to lead them to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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 https://netcdn.xyz/app/431946152/roblox-booga-booga-hack-game-hack In PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/code-free-robux_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://wolfzscriptsIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a90.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A90 26560 bytes
SHA-256: c5602a683cb4398c008363cc8d8e30b4931739cf3d23d5568976428f5cc0537e
font_01_sfnt_off00008803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8803 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000091b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B4 18468 bytes
SHA-256: 8f2f52aff80fb49a328e063288f2b5e4f116517157d382fa8b39f5595cbe047c

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