Malicious PDF — malware analysis report

Static analysis result for SHA-256 c22b934a8cac9276…

MALICIOUS

PDF

42.2 KB Created: 2021-05-11 17:31:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6c3489480c738f100c5c2e129ab6389a SHA-1: 568f1b380e9104fc0a7ac2410d1ba3ca2c6e74c0 SHA-256: c22b934a8cac927608c94766a076c642af6f4531167c5529913d8ca6ff7b78b5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting "free generator / game hack" lures. The primary redirector URL is https://netcdn.xyz/app/406889139/25-free-spins-coin-master-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector chain designed to lure users into clicking on malicious links, likely for phishing or malware distribution.

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/406889139/25-free-spins-coin-master-game-hack In PDF document text
    • http://berntfoto.dk/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-get-free-coins-in-coin-master_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_off000048fb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48FB 25560 bytes
SHA-256: 036b96a5d1ceb77f2ad82d6a82759eaf2ab99019404c66830f6a5b432200b7f8
font_01_sfnt_off000082fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82FE 18144 bytes
SHA-256: e61324631e03e98c071e12442239b73d0a12fcb8243797d210d051c8d69b565d

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