Malicious PDF — malware analysis report

Static analysis result for SHA-256 9933f02b155f0ebb…

MALICIOUS

PDF

43.4 KB Created: 2021-05-20 02:19:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 118a009aaeb8a2751667e8cc2eeb065c SHA-1: bb41254bf69a280af215da58c0341ea715c72c05 SHA-256: 9933f02b155f0ebba6342ec9c4824f4b806ee083f24a2f3841ba14be90fd7336
82 Risk Score

Malware Insights

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

This PDF document exhibits malicious behavior by presenting a fake CAPTCHA to trick users into interacting with the document, likely to initiate a download. The document contains numerous URLs, with a primary one pointing to a resource related to 'roblox username hack', suggesting a lure for game-related cheats or exploits. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • 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/431946152/how-to-change-your-roblox-username-for-free-game-hack PDF link annotation
    • http://reggieslockandkey.com/images/coin-free-spin_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-roblox-acc_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/tiktok-free-folowers-jio-phone-install-tamil_GM835599320.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-hair-roblox_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/pokemon-go-free-gyarados_GM1094591345.pdfIn PDF document text
    • https://reggieslockandkey.com/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-free-skin_GM431946152.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_off00004bd1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD1 24956 bytes
SHA-256: 766daec687e08b20cea355961a7f34669f07900e1635936602f79e90f24fbda1
font_01_sfnt_off000083db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83DB 19540 bytes
SHA-256: 50ecf7285bea5802cb0b20a8b9fdcfe95df60a9d9ebe9d63dbff9f8e980eaa15

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