Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ffe7614a29ddd7…

MALICIOUS

PDF

36.1 KB Created: 2021-06-21 03:35:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fec94b0b8340e3960ef6a061ab2d3460 SHA-1: 6b6cc4a9c6dc2e63fb17449746b3e09887010c85 SHA-256: a5ffe7614a29ddd7c57dfefe464d4e53ccdd8f2725417edabae074bf49eae1f0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically advertising game hacks and generators for popular games like Roblox and Coin Master. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous links to known malicious infrastructure indicates a high likelihood of this document being used to distribute malware or lead users to phishing sites. No scripts were extracted, but the document body and heuristics confirm the lure and redirection pattern.

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.co/app/431946152/roblox-super-power-training-simulator-hack-2021-game-hack In PDF document text
    • https://miraller.com/upload/files/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/tiktok-free-on-google_GM835599320.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-synapse-free-download-2021-feb_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/hey-google-how-do-you-get-free-robux_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_off000032a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A4 22468 bytes
SHA-256: 761ab9a4a7769f4b722a9a74d6c9cee1671173736942d4f83c4724b9fd0ced45
font_01_sfnt_off000064e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E3 20176 bytes
SHA-256: 34c3e6bd1a117f1222f26474d960c6616f8872f7354e7cb8454b0b563dc6dcbd

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