Malicious PDF — malware analysis report

Static analysis result for SHA-256 f69e3203c56d8508…

MALICIOUS

PDF

51.3 KB Created: 2021-06-08 12:20:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ab66ccfb3801e6ce4678b9fdf97f1fc8 SHA-1: 90cc3fd31fa66895d61d7050d84aef79c7df88e9 SHA-256: f69e3203c56d85087950f351bad68edf70d94cae76972eada897976b0e12d1a7
82 Risk Score

Malware Insights

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

The PDF document contains a lure impersonating Facebook to trick users into clicking a link for game cheat codes. The ML classifier strongly flagged this PDF as malicious, and the embedded URL points to a suspicious domain. The document body, though heavily obfuscated, contains references to game cheats and the malicious URL, indicating a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9861

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.tw/app/431946152/adopt-me-roblox-cheat-codes-twitter-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.tw/app/431946152/adopt-me-roblox-cheat-codes-twitter-game-hack PDF link annotation
    • http://io24.com.ar/images/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/pubg-uc-logo-png_GM1330123889.pdfIn PDF document text
    • http://io24.com.ar/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/tiktok-free-download-2021_GM835599320.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-free-dominus-and-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-free-robux-legit-no-human-verification_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-free-link-facebook_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
stream_004_off000050f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F0 37452 bytes
SHA-256: 9f84960ca3baed4e7b830f778a9c68ebc94db5b405f50a594b770800b752dcd2
font_01_sfnt_off0000a418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA418 19112 bytes
SHA-256: bd0fe04768a37a250ee5ad26ecc8bda5699626670922729746396358d993566d

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