Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b70bd132a31823c…

MALICIOUS

PDF

44.0 KB Created: 2021-05-16 20:31:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 55e956352ed3b873586f40ce71de48ba SHA-1: cb7fc9450fb7f5b29f1ce67171c293e51569d6a0 SHA-256: 5b70bd132a31823c15da7f41d0b1975d93f5cc86359e487f3193bba158595283
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, a common social engineering tactic to trick users into interacting with malicious content. It also embeds multiple URLs, including one pointing to a 'coin-master-hack-tool-generator', suggesting a scam or malware distribution attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/coin-master-hack-tool-generator-game-hack PDF link annotation
    • https://ceranique.nl/images/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/mathep_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/robux-no-survey_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/free-robux-android_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://ceranique.nl/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A5 24624 bytes
SHA-256: 4161eb0e5ee1c74a5143de4dbfda58f970851eef7fc0f22daada3d01ebbe8009
font_01_sfnt_off000080fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FD 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAF 17788 bytes
SHA-256: 0f526e1abc45333298d61d2ffbd228c521fd862e0b4d0d4d8e01ed873be913f0

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