Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbaee45402a567d1…

MALICIOUS

PDF

44.8 KB Created: 2021-05-12 16:30:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: aad8a1c0b43f4919aa95b3ffaee7fbdd SHA-1: 5d851359c211b1715a40a8613005fbc7a033b658 SHA-256: cbaee45402a567d13d0e2a3b6a9f6fe87adb2d063d1ff0b288621d8a4ee1459b
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a fake CAPTCHA lure, directing users to click on embedded URLs. These URLs, such as 'https://netcdn.xyz/app/406889139/hack-coin-master-spin-apk-game-hack', likely lead to further malicious content or scams. The document's structure and embedded links suggest it is designed to deceive users into downloading or executing further payloads, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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
  • 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/406889139/hack-coin-master-spin-apk-game-hack PDF link annotation
    • https://eyeonhimalaya.com/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/minecraft-114-download_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-coin_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/master-game_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C8 25332 bytes
SHA-256: 78728fbd9337ca7aa50b331c4a2d8b436dcd157242c4169d8daa7d728915904f
font_01_sfnt_off00008389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8389 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D74 17892 bytes
SHA-256: 38303170ac9c6ca0f2851823f29ecc879fead5c3d3518135c6ab8fad8fa3f0a9

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