Malicious PDF — malware analysis report

Static analysis result for SHA-256 4814306b61da7939…

MALICIOUS

PDF

46.5 KB Created: 2021-05-15 17:34:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 28a33af206f9b78c9d8ef6844459dffe SHA-1: ad3da55c5465f3b626ae90f2b83de59753b07543 SHA-256: 4814306b61da7939867a26d7b013a00ebf31e3bddac32146818bf7e431d26df9
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free in-game currency and exploits, directing users to download files from external URLs. The presence of embedded URLs and a high ML classifier score indicate malicious intent. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest it acts as a downloader or phishing lure, likely employing JavaScript for its functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/431946152/roblox-free-robux-no-verification-game-hack PDF link annotation
    • https://eurekaaccounting.co.za/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/coin-master-free-download_GM406889139.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • https://eurekaaccounting.co.za/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48EC 28304 bytes
SHA-256: db3661447f01cba3991a4f0b2fb9f0acd992fd56d4cd9ef77fffc31c4adcaee8
font_01_sfnt_off00008855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8855 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9240 18676 bytes
SHA-256: d88aecf2630d4fcf6e85b9a2b5560aad6055705ec2bb19cbd5d89ce1bd292ac8

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