Malicious PDF — malware analysis report

Static analysis result for SHA-256 949de4c1eac40fb4…

MALICIOUS

PDF

36.9 KB Created: 2021-05-22 04:44:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8b20c1911ea19fcd33273087af86d914 SHA-1: c79635574547f3177c72bb724cade07a003c4cb5 SHA-256: 949de4c1eac40fb4667b4740259bbf638bb31cee854391e8928fb3292c496ef9
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple heuristics indicating social engineering lures, including a fake download button, a browser extension installation lure, and brand impersonation (Microsoft) with a mismatched link host. The embedded URL and other extracted URLs point to a Roblox hacking tool, suggesting a phishing or malware distribution attempt. No scripts were extracted from this sample, but the overall pattern suggests a malicious document designed to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 6

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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: https://netcdn.xyz/app/431946152/roblox-script-hack-game-hack.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 https://netcdn.xyz/app/431946152/roblox-script-hack-game-hack PDF link annotation
    • http://dopheide.be/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-club-hack_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/free-exploits-for-roblox_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
stream_002_off00002fda.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FDA 26432 bytes
SHA-256: b93dddc99c6f36e4203c28b9cdc2f495d8c5eece66caeca0553caf8ffc20e52f
font_01_sfnt_off00006de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE7 18580 bytes
SHA-256: c1944f3c26fd870ce0e5de863125d21882df0ce96ba9356e52db8af51b5248a2

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