Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8f0de1d934c06ba…

MALICIOUS

PDF

41.0 KB Created: 2021-05-12 23:40:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 40582884e2d74f5a93b5ecb9e2aafcb6 SHA-1: c70b84c064adbe89bfebee5efd3a6c22b0414217 SHA-256: d8f0de1d934c06ba8770897e866414b0c8189b58952a2e6ac1cc8e11d33d0c9b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that point to known malicious redirector infrastructure, specifically advertising 'free generator / game hack' lures. These links are designed to trick users into visiting potentially harmful websites. The document body and heuristics strongly indicate a phishing or scam attempt leveraging popular game themes to entice clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/free-spin-link-of-coin-master-game-hack In PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-client_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-no-offers_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_off000047a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47A6 24600 bytes
SHA-256: 022b8bf0a268467a658e62499d67619c281f1d55214ccd7d035dd0ebc3f6d257
font_01_sfnt_off00007ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA1 18056 bytes
SHA-256: 356c08646bfbef9f69d0ba55babd40c7485a9f64db237320543c80bb2a18a5c5

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