Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd19847c09e2dbf6…

MALICIOUS

PDF

44.4 KB Created: 2021-05-17 19:36:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 997b5cdb254c359d60979d43d66f8467 SHA-1: f8bde240c8f24793810d65bca835dc4a15e2aa91 SHA-256: cd19847c09e2dbf669fc2028c892dbe7b4609e7d601bcedde005eacc5bbc5835
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded URLs and a document body that explicitly advertises hacks for games like Coin Master and Roblox, directing users to download potentially malicious files. The ML classifier and redirector link heuristic strongly indicate malicious intent. The document likely serves as a lure to download a second-stage payload, potentially involving JavaScript execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 3

  • 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/coin-master-hack-10.2.1-game-hack In PDF document text
    • http://montchanintt.fr/images/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/www-rubux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/free-robux-no-verification-or-survey-2021_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_off000047f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F9 24940 bytes
SHA-256: 5b50f287e278819d98508938dfbc614fd278cb89a31e57273133e41d2aaf5c0d
font_01_sfnt_off00008159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8159 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0B 18184 bytes
SHA-256: d583644d915bd171f19add23b0833aca52e77891297bd05357916fb27d6d46c1

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