Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c960f74418b56dd…

MALICIOUS

PDF

48.6 KB Created: 2021-05-15 17:01:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 05732e883b99e1dd8826a00451da4ac8 SHA-1: 592b662fb560f28336bbc5a28b6e8f0b507ec856 SHA-256: 6c960f74418b56ddaf865ca5d97316a8a4c45770fbbc10d46b7ba9ea3bf13563
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to a 'free generator' or 'game hack' website, identified as a malicious redirector. The document body, though partially corrupted, contains references to 'free Robux' and a URL that aligns with the heuristic findings. This suggests a social engineering lure to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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/how-to-get-free-robux-on-pc-game-hack In PDF document text
    • https://hbpbenin.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/no-human-verification_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/free-robux-website_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://hbpbenin.com/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004905.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4905 25580 bytes
SHA-256: 4f0f3f703dea5ceea12f3cb2f8fb439b5003ee985b7e5e5d4ccdfeaa4583c54b
font_01_sfnt_off000083fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FA 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off00008db7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB7 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off00009ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC8 18436 bytes
SHA-256: 3da4067756d8a9659bbf1d91e8f5987ff560a340f178cc4f41ff3c3676747205

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