Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4ec18a9130b503…

MALICIOUS

PDF

35.1 KB Created: 2021-06-19 21:35:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 077fd6c3bfaa06d02ebf7294ed9038b7 SHA-1: 139e4ecca83ac8580f804ded5570903a93582682 SHA-256: 7d4ec18a9130b503b880d89a47f6336e445444248f578dad8d9bee44246f9e4d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-hacker-shirt-template-game-hack PDF link annotation
    • http://reggieslockandkey.com/images/how-to-hack-in-roblox-2021-may_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-hack-roblox-with-brutis_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-roblox-cards-no-survey_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-system_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-robux-generator-no-human-verification-or-download_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-animal-tail-roblox_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/hacks-for-cb-roblox_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-minecraft-server-hosting-24-7_GM479516143.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_off000031c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C5 22252 bytes
SHA-256: 998e6c94808a5c7558d9433dda30484c2c385047d8764cc584494590cf4cb0f8
font_01_sfnt_off00006318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6318 19480 bytes
SHA-256: 88e54eb02743bc8c9ec3652d526a99b7eae48fe9086fe986a2eadbed4ae75573

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