Malicious PDF — malware analysis report

Static analysis result for SHA-256 51c86263413b118c…

MALICIOUS

PDF

33.3 KB Created: 2021-06-25 22:13:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 891559971fbff23929573eef658fadbf SHA-1: b6a72a692dcf4afe6e6c3d342c9261f14b9f1649 SHA-256: 51c86263413b118cc1d304e0fa5cc9d322e9e45a820db31dcd4c697b3af8e6ff
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, specifically mentioning Roblox and Cheat Engine. It contains embedded links that point to known malicious redirector infrastructure, such as http://netcdn.co/app/431946152/use-cheat-engine-roblox-game-hack. The primary purpose appears to be directing users to potentially malicious websites that may host further malware or phishing attempts.

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.co/app/431946152/use-cheat-engine-roblox-game-hack In PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/how-to-hack-into-a-roblox-players-login_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/roblox-jailbreak-how-to-get-all-cars-for-free_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/hack-programm-fr-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/getrobux-now_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/a-modded-day-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/free-tiktok-coins_GM835599320.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_off00002c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2B 22256 bytes
SHA-256: 4fc83bd1b7f8d30040070c5a70fbe51e53f4f19f84413318f4ece964dc5a6325
font_01_sfnt_off00005dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBF 18876 bytes
SHA-256: 56c102bdc745113716e087dc5f6fb790dae195c85ebfabfc9d64b6e90eac7584

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