Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dbba87b6b9e4574…

MALICIOUS

PDF

46.9 KB Created: 2021-05-17 18:02:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 25cbde031cca5262e49558c2316de0ef SHA-1: 03eb373da82aa4e6cccf92a4aa9b9f573560983e SHA-256: 6dbba87b6b9e45749a945ee50495dba11d01bf2d2a8f139b99f325130d0ede29
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' and game hacks. The ML classifier also flagged this PDF as malicious. The primary IOC is the redirector URL, which is likely used to host or chain to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-robux-com-2021-game-hack In PDF document text
    • http://www.pbconsulting.it/images/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pbconsulting.it/images/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://www.pbconsulting.it/images/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.pbconsulting.it/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.pbconsulting.it/images/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://www.pbconsulting.it/images/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://www.pbconsulting.it/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.pbconsulting.it/images/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pbconsulting.it/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.pbconsulting.it/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pbconsulting.it/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.pbconsulting.it/images/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://www.pbconsulting.it/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://www.pbconsulting.it/images/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • http://www.pbconsulting.it/images/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://www.pbconsulting.it/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.pbconsulting.it/images/wurst-download_GM479516143.pdfIn PDF document text
    • http://www.pbconsulting.it/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://www.pbconsulting.it/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pbconsulting.it/images/roblox-redeem-card-codes-free_GM431946152.pdfIn 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
font_00_sfnt_off000045e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45E8 28932 bytes
SHA-256: f81d1c0e8341b7dd3c92892abc8f4d7a2c8f9ee7b00dca77e3a48d61bc754204
font_01_sfnt_off000086fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86FB 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off000093a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93A3 18676 bytes
SHA-256: db7deb15448d884d15c6a42f746ab8a768d26593fd7e085f0109997e06cd96ff

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