Malicious PDF — malware analysis report

Static analysis result for SHA-256 8066eba30acc7d40…

MALICIOUS

PDF

43.3 KB Created: 2021-05-15 03:48:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 88f9b6214b6cb85c4da1952bcf3a4e81 SHA-1: ba4372c8e92f439a11190e8a4839d3c961e5cb15 SHA-256: 8066eba30acc7d40aecc054b1ff495bd1e7ed6aeac88ab80db843640409a040c
82 Risk Score

Malware Insights

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

The sample is a PDF document that displays a fake CAPTCHA or human verification prompt, a common lure to trick users into clicking malicious links or downloading further payloads. The document contains numerous URLs pointing to potentially malicious content, including one directly associated with a fake CAPTCHA heuristic. The ML classifier also flagged this PDF as malicious 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/479516143/minecraft-java-code-free-game-hack PDF link annotation
    • http://brokermortgages.com/images/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-but_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-website_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
font_00_sfnt_off00004ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ACE 30288 bytes
SHA-256: b631a8d3447045d5a385f6b1b801cc9eb9ff3f215287cd815afb03e42621812a
font_01_sfnt_off00008785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8785 18164 bytes
SHA-256: 9f11f6ffdaa6f71614cd3df9f38f5d5af32d3843530a13967cf59faad31feba0

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