Malicious PDF — malware analysis report

Static analysis result for SHA-256 6397bd8d9f5feca2…

MALICIOUS

PDF

46.0 KB Created: 2021-05-12 12:01:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fae06e85fa131aa083fc09ab7211ad9c SHA-1: 30edb0e33053602ebe08fce8d03896d1dd8db4bb SHA-256: 6397bd8d9f5feca2efbd2de416ee9d3521145a7381f42e8f61c45a615af04731
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The document impersonates Microsoft to lure users into clicking a link for "Minecraft Hacks", which is a common tactic for credential phishing or malware distribution. The embedded URL, https://netcdn.xyz/app/479516143/minecraft-hacks-1.15-2-game-hack, is likely to host a malicious payload or redirect to a phishing page. The heuristic findings strongly indicate a brand impersonation and credential phishing lure, with the document body containing a call-to-action and external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 5

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/479516143/minecraft-hacks-1.15-2-game-hack.
  • 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-hacks-1.15-2-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/dailyrobux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-2021-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_off00004f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F8D 25144 bytes
SHA-256: 91a79695bc89af1635c3cd3c2d22e7d4c31fb5068c78df0fdb76d331a7e724ce
font_01_sfnt_off000087c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C0 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000091aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91AA 18168 bytes
SHA-256: 304447a64c9c9da34caed164523f062cdaeb71933cc5e9c334f07884a33f2f76

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