Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c8997be6f2c2b48…

MALICIOUS

PDF

32.7 KB Created: 2021-07-20 04:20:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bd696b9d0095236fd5cc7430b80461b7 SHA-1: 0c0390b6186d52a42583904bd5479b62b13d9fd4 SHA-256: 8c8997be6f2c2b48f17bf3fc4ef48f3805f309f528c7f790d5477a31238d4974
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for free Robux, a popular in-game currency, which is a common tactic for phishing and malware distribution. The embedded URL and numerous linked PDFs on `mycounty.com.ua` likely host malicious payloads or lead to credential harvesting sites. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure and external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/431946152/how-to-get-free-robux-no-verification-game-hack PDF link annotation
    • https://mycounty.com.ua/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://mycounty.com.ua/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://mycounty.com.ua/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://mycounty.com.ua/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://mycounty.com.ua/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://mycounty.com.ua/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://mycounty.com.ua/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://mycounty.com.ua/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://mycounty.com.ua/images/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • https://mycounty.com.ua/images/bloxpink-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000298a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x298A 22508 bytes
SHA-256: d573bc06b8e9ad8edf4b4cc787eaae0596348ae538521820861de9df64fb17ff
font_01_sfnt_off00005baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAA 18948 bytes
SHA-256: 9dcb646a4577617f23880fd9ce8a94083064c98cd4092779ba74cf00f9732304

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