Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af5dfd17951542b…

MALICIOUS

PDF

46.9 KB Created: 2021-05-17 04:36:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e86cd9b8d2c9122e501b0963c9adae7a SHA-1: 2e0d6aaeed2d2f01f1772f0f590c2be5a9d94ec5 SHA-256: 4af5dfd17951542b041928d250fcf32a136e659bbbc67efe72e6719b5edaf774
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hack generators. The document body, though partially corrupted, contains references to game hacks and includes a URL that is flagged as malicious. The presence of embedded URLs and the overall structure strongly suggest a phishing or redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/how-many-levels-are-in-coin-master-game-hack In PDF document text
    • https://www.europap.cz/images/_GM479516143.pdfIn PDF document text
    • https://www.europap.cz/images/free-roblox-svg_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://www.europap.cz/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47CF 30120 bytes
SHA-256: e430cc91dfb541d99907da597ce04cf5063fbc538bb414ca1967e13005e9944d
font_01_sfnt_off00008a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3C 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off00009540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9540 18076 bytes
SHA-256: 54e54f6e61ae990098bb4cdf24a44bcdd14b606a50495af7ec2cc921364cf956

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