Malicious PDF — malware analysis report

Static analysis result for SHA-256 69991f93b9a44d72…

MALICIOUS

PDF

41.2 KB Created: 2021-05-13 12:01:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f8850b7bfa5b68d2c8141746eefec1b9 SHA-1: 18bafb2c03d83b502432f4024ab63b67865b1613 SHA-256: 69991f93b9a44d72db2b6a61854dd1d7a611b35b4d537b398e073d6335d327e4
82 Risk Score

Malware Insights

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

The PDF document employs a fake CAPTCHA lure to entice users into clicking a malicious link. This link, 'https://netcdn.xyz/app/431946152/roblox-no-download-hack-game-hack', likely leads to the download of a second-stage payload. The document's content and heuristics strongly suggest a social engineering attack aimed at tricking users into downloading potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/roblox-no-download-hack-game-hack PDF link annotation
    • http://hostalsalou.eu/images/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://hostalsalou.eu/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://hostalsalou.eu/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://hostalsalou.eu/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://hostalsalou.eu/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://hostalsalou.eu/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://hostalsalou.eu/images/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://hostalsalou.eu/images/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://hostalsalou.eu/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://hostalsalou.eu/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://hostalsalou.eu/images/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://hostalsalou.eu/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://hostalsalou.eu/images/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://hostalsalou.eu/images/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://hostalsalou.eu/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://hostalsalou.eu/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://hostalsalou.eu/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://hostalsalou.eu/images/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://hostalsalou.eu/images/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://hostalsalou.eu/images/how-to-hack-roblox-to-get-free-robux_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_off00004514.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4514 24468 bytes
SHA-256: dc8a2b6d89dc23fd9fee980be4c8a30eedd8a205938b2620be8c89380d68f15d
font_01_sfnt_off00007ce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE8 18688 bytes
SHA-256: d5d7cfea6fb7c102685ba8f1dd19dd1f71835ac40da00045e859a47e2011ef1d

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