Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc8f5b950ec21681…

MALICIOUS

PDF

40.9 KB Created: 2021-05-20 07:11:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a172b3be896be4456ecfbf9a9e5d9113 SHA-1: b92a38233c001884b28867fe486eebb4f9174cdc SHA-256: bc8f5b950ec21681f259c3990c4a9207ef11327e3f9ab517f1b0b0cc81ccc68f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, masquerading as game hacks or generators. The heuristic firings indicate that the PDF is designed to lure users to these malicious sites, likely as part of a phishing or scam campaign. While no scripts were explicitly extracted, the nature of the embedded links and the lure suggest a potential for further malicious activity upon user interaction.

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/479516143/free-minecraft-client-game-hack In PDF document text
    • http://learningarabic.co.uk/images/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/tiktok-free-account_GM835599320.pdfIn PDF document text
    • http://learningarabic.co.uk/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/robux-2021_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004591.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4591 25204 bytes
SHA-256: 889536361bfff146d9cb6e40e3561ef65a16f99f991fa753665f881d24ad6fdd
font_01_sfnt_off00007f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F56 17644 bytes
SHA-256: ce5b71cd939a97bbe405c9e475902c75b00f7b9e8e716883d10cd93b76626efe

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