Malicious PDF — malware analysis report

Static analysis result for SHA-256 612ec7ac63d8e728…

MALICIOUS

PDF

35.2 KB Created: 2021-06-22 11:11:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5a81a18c790bf62a83cac0f068e3498d SHA-1: 6c5f6f8eaab39e648420fba8cd17ba64d70cfb4a SHA-256: 612ec7ac63d8e7281ecbd5c768e45bc50c6c9f34d1646c10551ecf1dadd9c10b
122 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. 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 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/can-i-get-roblox-for-free-game-hack.
  • 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/can-i-get-roblox-for-free-game-hack PDF link annotation
    • http://demenagementlandry.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/robux-match_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/code-card-roblox-free_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://demenagementlandry.com/images/how-2-get-free-robux_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://demenagementlandry.com/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://demenagementlandry.com/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-roblox-account-with-robux-password_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/hacks-para-roblox-2021-descargar_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-robux-number_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/inappropriate-roblox-games-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_off00003304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3304 22608 bytes
SHA-256: 9bb0a5ca0d5025cab68c6e38e4b20083625f3e3fbc8863d4dbeae911dd8e7a8a
font_01_sfnt_off0000657d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657D 18752 bytes
SHA-256: 9b944382bb690f856d611f052cd73ca75c500202b9811758a8110fb987acb555

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