Malicious PDF — malware analysis report

Static analysis result for SHA-256 6795c173c2d738c5…

MALICIOUS

PDF

42.2 KB Created: 2021-04-25 10:38:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 68bf369fd13870e9cf5f5288e0e5aa82 SHA-1: 97c2ed08bf08a6636c299916155055b46a81dc30 SHA-256: 6795c173c2d738c532f010a8fa4237252feeaa3693aec3c4a96b9f953bf40906
82 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a brand-impersonation credential phishing lure, specifically impersonating Facebook to promote Roblox cheats. It directs users to a malicious URL, https://netcdn.xyz/app/431946152/roblox-emergency-response-cheats-game-hack, which is likely intended to deliver a malicious payload or lead to further compromise. The presence of numerous other suspicious URLs related to Roblox hacks further supports this conclusion.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • 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-emergency-response-cheats-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/roblox-emergency-response-cheats-game-hack PDF link annotation
    • http://wattkit.com/images/roblox-money-hack-free.pdfIn PDF document text
    • http://wattkit.com/images/roblox-dll-cheat.pdfIn PDF document text
    • http://wattkit.com/images/how-to-get-free-schrt-in-robux-brighschows.pdfIn PDF document text
    • http://wattkit.com/images/cheat-engine-get-free-robux.pdfIn PDF document text
    • http://wattkit.com/images/free-white-shirt-roblox.pdfIn PDF document text
    • http://wattkit.com/images/hack-magnet-simulator-roblox.pdfIn PDF document text
    • http://wattkit.com/images/barbie-free-online-games-on-roblox.pdfIn PDF document text
    • http://wattkit.com/images/how-to-get-free-robux-april-2021.pdfIn PDF document text
    • http://wattkit.com/images/free-robux-codes-get-robux-absolutely-free.pdfIn PDF document text
    • http://wattkit.com/images/how-to-get-free-robux-on-computer-no-human-verification.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_003_off00003f9a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F9A 28980 bytes
SHA-256: 5dfd90d5a79482ddc564e2e794cb718c6e972045ab00f557007d5866c45e540b
font_01_sfnt_off00008095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8095 19184 bytes
SHA-256: 686f14061d472818293ac40e25358c9b05b03a64b1a546fc5f6aa3b18d276844

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