Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c812094dce3eb6…

MALICIOUS

PDF

42.1 KB Created: 2021-05-14 13:32:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 136d7501106a6e421c46ed7235828452 SHA-1: 2f2abc6beb39b7b3f3ffed85faaa1ddeaeefb66d SHA-256: 94c812094dce3eb613b5e4ec4d775f683616dc785740426e89d53bc4e300c850
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector infrastructure at `https://netcdn.xyz/app/406889139/coin-master-free-cards-link-2021-game-hack`. The document body and heuristics indicate a lure for game hacks and free currency, likely to lead users to a phishing or malware download site. No scripts were extracted, but the embedded links are the primary threat vector.

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/coin-master-free-cards-link-2021-game-hack In PDF document text
    • https://www.utalii.ac.ke/images/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/coin-master-spin-link-free_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_off000047f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F1 24856 bytes
SHA-256: 739d506d8cf56e5455ffe60bae5a8983d72fe5f2c6a1dc676a21f2ba4906c0fd
font_01_sfnt_off00008154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8154 18456 bytes
SHA-256: b51790488d60a3c79421cfddad0a6ae9f074b26b8d27a704dda1d2d7bad48ec0

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