Malicious PDF — malware analysis report

Static analysis result for SHA-256 809f10e8ebabcd6d…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 16:23:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: eaaf98e1992ff5065bb464205c4399ea SHA-1: d30f45ea4995d723bd68930faa7311e9ab0ec74b SHA-256: 809f10e8ebabcd6dadd30230dc9a477698dde3605163cd95d602ec32b980fe4e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link that redirects to known malicious infrastructure, specifically advertising a 'coin master spin free game hack'. This lure is designed to trick users into visiting a potentially harmful site. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URL is the primary indicator of 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/406889139/coin-master-spin-free-game-hack In PDF document text
    • https://www.drsertac.net/upload/content/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/poki-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/booga-booga-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/roblox-breaking-point-hacks_GM431946152.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/how-to-hack-blodfiest-roblox_GM431946152.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/cheat-engine-codes-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.drsertac.net/upload/content/files/inf-robux-hack_GM431946152.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_off0000313d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313D 22888 bytes
SHA-256: fabb761cad9e952ec4b1555604afe0676b8f40badc6ec14c53955b8838178c54
font_01_sfnt_off000064b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B7 18176 bytes
SHA-256: 9d64f59deaede30a08c34bcec3da02112a68e9d41babb799f745357d62befbf6

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