Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c8dab8605ccb9f…

MALICIOUS

PDF

35.5 KB Created: 2021-06-22 00:40:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e776375337293ec0239e06a344070635 SHA-1: c3e152180c71da1e6380318c97ab5b2c1bd198a2 SHA-256: c3c8dab8605ccb9f8640330c22fa10f55f9977e4a6319da84ba32452002e39ab
100 Risk Score

Malware Insights

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

This PDF document contains embedded links that redirect to external sites offering game hacks and cheats, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body also contains a call-to-action phrase, suggesting a lure to download further content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to trick users into downloading potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-robux-hack-v-3.5-game-hack In PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/hack-de-juegos-robux_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-followers-hack-roblox_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/wurst_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/hack-full-slot-roblox_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/robux-giver_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/www-coin-master_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/roblox-cheat-engine-table-08-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A8 22596 bytes
SHA-256: eeaa81a1c5bf40de3d38d6e161e15743d1e52991fb6b3fe220aa69538b686e17
font_01_sfnt_off00006512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6512 19304 bytes
SHA-256: 04fc73aa79b95db41a0324967c2400b185610612a01caad879a8a5778b78d6a0

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