Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d7e0b3ff6d19a0e…

MALICIOUS

PDF

45.5 KB Created: 2021-05-19 09:35:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cdf7b58523b241c9d09dcbbc1e685f9b SHA-1: bae141a6b5d3dd33b27d95b29e11556b14294795 SHA-256: 9d7e0b3ff6d19a0ef129e0b7b36fd81c1d05bad516e334d24e423302a64649a6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, including one that promises free game hacks and directs to 'netcdn.xyz'. The document body and extracted URLs indicate a lure for game-related cheats, which is a common social engineering tactic. The presence of embedded URLs and the ML classifier strongly suggest malicious intent, likely to redirect users to further malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/free-spins-coin-master-2021-hack-game-hack In PDF document text
    • http://karldall.dk/images/more-robux_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://karldall.dk/images/pubg-uc-add_GM1330123889.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/how-to-get-free-tiktok_GM835599320.pdfIn PDF document text
    • http://karldall.dk/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/minecraft-free-apk_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004815.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4815 25164 bytes
SHA-256: 0bbcef028ce4eb9091bb8047ec4bd90a03bf34e8f00ab12857bcba5a506b1468
font_01_sfnt_off00008022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8022 19784 bytes
SHA-256: 96f7f4758fc502363a975c18af6f501cce5dea8f0164d8f13da126ce2947735c
font_02_sfnt_off0000a6b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6B8 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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