Malicious PDF — malware analysis report

Static analysis result for SHA-256 69896f424df0ea8b…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 15:49:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f68f97268c16ecb5daad264debd24b65 SHA-1: 6b50a046f33ac29bc693ec666a8c9a755beea256 SHA-256: 69896f424df0ea8bfc494f8c8fa50eae8daac3771cfab825151f16100c396033
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors and websites offering free in-game currency or hacks, such as 'free-robux-app-game-hack'. The document body and embedded URLs strongly suggest a social engineering lure to trick users into visiting malicious sites. The presence of PDF-specific heuristics like 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_GAME_HACK_REDIRECT_LURE' confirms the malicious intent.

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.tw/app/431946152/free-robux-app-game-hack In PDF document text
    • http://croatia-flyfishing.com/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/free-bandit-mask-roblox_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/roblox-hacked-pc-download_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-cool-stuff-roblox_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/hackaron-roblox_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/fb-coin-master_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-get-r-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/roblox-jailbroken-hack_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-free-spins-haktuts_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_off00002ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECD 21656 bytes
SHA-256: 2833bf3928101f844e22dd4fcefe340bd84d61bf8eec5796f20ced42fca6354f
font_01_sfnt_off00005e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E64 18892 bytes
SHA-256: 98799f5422297995f0985cb1c378b21e0f8722881e70436717831cdef5a17d10

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