Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f0c02cf6f5d1be2…

MALICIOUS

PDF

36.7 KB Created: 2021-05-22 14:36:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c26d09bbbbb0a15025f33aaaa98a58d0 SHA-1: 8bea0a19d42913f7df808ee8dc40c5bf5d167de2 SHA-256: 8f0c02cf6f5d1be252cb8b228995e0e0c1b8faf4be9cc71d018f3c4bba8cbf91
140 Risk Score

Malware Insights

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

The PDF contains embedded links and text that impersonate the Netflix brand, luring users with the promise of free Robux. The primary link redirects to a known malicious infrastructure, indicating a credential phishing or malware distribution attempt. The ML classifier also flagged the document as malicious, supporting this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • 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.
  • 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/robux-match.com-free-robux-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
  • 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/robux-match.com-free-robux-game-hack In PDF document text
    • http://pythonbikers.de/images/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pythonbikers.de/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://pythonbikers.de/images/coin-master-free-2021-spin-link_GM406889139.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_off0000325a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325A 24948 bytes
SHA-256: d981ddfc608e068d76fe39af18a8e7d7c558c62bc4b8a2c5e1fdf265dca6ab86
font_01_sfnt_off00006c20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C20 18904 bytes
SHA-256: 4a85ad6ffc73ad9b3f41fceca22de32e3ce7595015d69f53ae753139e52ac9f7

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