Malicious PDF — malware analysis report

Static analysis result for SHA-256 81aa2e17ae56d0fd…

MALICIOUS

PDF

42.4 KB Created: 2021-05-19 20:34:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8194c15e80740e21b8d3452e872d7ea8 SHA-1: 2db6fd48b8eecc71d67ffca55077e681db133919 SHA-256: 81aa2e17ae56d0fdbc3e7d4cbd16915caf3048f7a66d202c4f884b0f2ef312b1
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a prominent external URI pointing to a site offering 'daily free spins on coin master game hack'. The ML classifier strongly flagged this PDF as malicious. The presence of a download button lure and callback phishing lure suggests a social engineering attempt to trick the user into downloading a payload or engaging with a scammer. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/daily-free-spins-on-coin-master-game-hack PDF link annotation
    • http://www.beantownlimo.com/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.beantownlimo.com/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://www.beantownlimo.com/images/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • http://www.beantownlimo.com/images/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.beantownlimo.com/images/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://www.beantownlimo.com/images/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://www.beantownlimo.com/images/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://www.beantownlimo.com/images/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.beantownlimo.com/images/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • http://www.beantownlimo.com/images/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.beantownlimo.com/images/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://www.beantownlimo.com/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.beantownlimo.com/images/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • http://www.beantownlimo.com/images/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://www.beantownlimo.com/images/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://www.beantownlimo.com/images/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://www.beantownlimo.com/images/tiktok-free-website_GM835599320.pdfIn PDF document text
    • http://www.beantownlimo.com/images/hack-client_GM479516143.pdfIn PDF document text
    • http://www.beantownlimo.com/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://www.beantownlimo.com/images/coin-master-hack-app-for-ios_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
stream_003_off00004acd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ACD 24996 bytes
SHA-256: 310b8342d7230ad08476f36ced2bf33249e549fd780cf0fc21dc42713c446bc3
font_01_sfnt_off00008377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8377 18308 bytes
SHA-256: 1bc93d0bdf7bcc9dde046a772a1d5e318036c000a48b0748ebe0e6d1e12db192

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