Malicious PDF — malware analysis report

Static analysis result for SHA-256 0064c7969ad5915d…

MALICIOUS

PDF

42.8 KB Created: 2021-05-13 08:58:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c238fb01a0852dcd7cdb498d63199129 SHA-1: 6f636ea8072d4bb1bbb885289a84626bb51df3b0 SHA-256: 0064c7969ad5915d9a810798e9a29817bc78491f3b5423bc57b1cfd6bcd01904
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1553.005 Subvert Trust Controls

The PDF document presents a fake CAPTCHA and a call-to-action button impersonating Facebook to trick users into clicking a malicious link. The embedded URL and numerous other URLs point to sites offering free Robux or game hacks, indicating a likely credential phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and heuristics strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • 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/robux-match.com-free-robux-game-hack PDF link annotation
    • https://my-private-intendant.com/images/_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-vip-roblox_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/get-more-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004941.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4941 25184 bytes
SHA-256: 09bc2573eea24098047fd1b9472fd24e5cae3cdb3eae9e6a18ecb483130d9936
font_01_sfnt_off00008341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8341 18904 bytes
SHA-256: 4a85ad6ffc73ad9b3f41fceca22de32e3ce7595015d69f53ae753139e52ac9f7

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