Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c35993297850dc…

MALICIOUS

PDF

47.6 KB Created: 2021-06-03 12:44:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1996deaea0e163e130b31768f2f67de0 SHA-1: ec757e7db2460ba8713d0f58b1c498f8fd7e518f SHA-256: 14c35993297850dcfb22ff3a174bd2648fb4be792ad07263293d2811ac87f987
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to known malicious redirectors, disguised as game hacks and generators. The document body, though heavily obfuscated, contains references to 'game hack' and a URL that aligns with the heuristic findings. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/479516143/hacker-minecraft-song-game-hack In PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/tiktok-free-internet_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
stream_004_off00005579.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5579 29748 bytes
SHA-256: 3d2bda0c4d0c9a3ae2a6ec460a799e8c290128e493788530eecc08d6aa78c824
font_01_sfnt_off00009825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9825 18168 bytes
SHA-256: 37e3c409e679a213a10e0592b8ff177cf348fa9834d19b03b17241e7ed0c948b

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