Malicious PDF — malware analysis report

Static analysis result for SHA-256 99d24e09800a5c9d…

MALICIOUS

PDF

43.5 KB Created: 2021-05-15 16:00:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1f0ebeeb11c0a8ce15157f95177036bb SHA-1: d27fe1fec167b41326137e1a1fffcf929b472302 SHA-256: 99d24e09800a5c9d8c33d4b98fc0ff147721d88ecaa033212492506e7e9df14d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'robux generators' and 'game hacks'. These links likely serve as a lure to download further malicious content or redirect to phishing pages. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/robux-generators-that-actually-work-game-hack In PDF document text
    • http://shahriyarclimb.com/images/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://shahriyarclimb.com/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://shahriyarclimb.com/images/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-spin-coin-master-instagram_GM406889139.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_003_off00004b52.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B52 25360 bytes
SHA-256: 6185d4b37b3935430afef41ee39d4b0f9fdd16061bd97a73851a79d2fe187e80
font_01_sfnt_off0000857e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857E 18968 bytes
SHA-256: ddbdedd946da9c20f240abbed8bdf8c55517508d28d22b252adc9eca822b6901

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