Malicious PDF — malware analysis report

Static analysis result for SHA-256 abdc10fc05766a9e…

MALICIOUS

PDF

36.4 KB Created: 2021-05-24 17:23:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e9122227876d668b29dceef817ae3727 SHA-1: fe0bdb39589f69b23420e921ddbc7f0235f0b6d4 SHA-256: abdc10fc05766a9ec2cd8249704dc9c89f37a55aedf905972e5b684806046d62
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and displays a fake CAPTCHA prompt to deceive the user. The primary URL leads to a page that claims to offer a free game unlock, but likely serves as a lure for malicious activity. The presence of a fake CAPTCHA suggests an attempt to trick the user into performing an action that could lead to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/minecraft-windows-10-edition-unlock-full-game-free-game-hack PDF link annotation
    • http://reggieslockandkey.com/images/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-free-robux-generator_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
font_00_sfnt_off00003361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3361 24220 bytes
SHA-256: 2b9ba9162e02be96cf29ed35fea95b59d7af8eb0deace6bda53cb973dbee0b26
font_01_sfnt_off000069d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69D6 19356 bytes
SHA-256: 614bd227759a0900337b007d73888638d95591a994554acf55d00d578ccef1d0

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