Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f3f6a277449b6b2…

MALICIOUS

PDF

35.7 KB Created: 2021-06-24 00:09:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2f5a67ba817c26ae45e840e6a73a2d1e SHA-1: 16dd8a8ac1488d1c1d50f9a058cb6bf4656cd711 SHA-256: 7f3f6a277449b6b2bb5570af8aa2df62444301740a0bfe65679266b11816e6da
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The ML classifier also flagged this PDF as malicious with high confidence. The primary lure appears to be related to Roblox and other games, aiming to trick users into visiting the malicious URL.

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/roblox-super-power-training-cheat-game-hack In PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/roblox-vehicle-simulator-free-money_GM431946152.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/roblox-hack-jailbreak-download-free_GM431946152.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/unlimited-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://www.en.indigo-imaging.com/Public/upload/editorfiles/wurst-client-18-9_GM479516143.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_off0000325e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325E 22684 bytes
SHA-256: c67ff2e3b075036f6340b8be2fa1f187138f0d99d286384c2766c83228518371
font_01_sfnt_off00006511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6511 19512 bytes
SHA-256: 8b27ad7f2a3c4482418c4fc9a41516a708f9bc9ad539dd858f24b4a49cae60c2

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