Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b6cce70fd7db2cf…

MALICIOUS

PDF

43.1 KB Created: 2021-05-14 21:04:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d33adbcfc23a99818422d7e3d8846e01 SHA-1: c7a78ae38acc593061941ff1be6bf711bcaf10f8 SHA-256: 8b6cce70fd7db2cf94eb2211ec31a41bd26b7c0534b95b5f356cf18277b10caf
82 Risk Score

Malware Insights

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

The document impersonates Microsoft and contains a call-to-action to download a fake Minecraft application from the URL https://netcdn.xyz/app/479516143/minecraft-pe-0.17-0-apk-free-download-android-game-hack. This suggests a credential phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and embedded links indicate a malicious workflow, likely involving exploitation of PDF viewers or user interaction to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • 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-pe-0.17-0-apk-free-download-android-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-pe-0.17-0-apk-free-download-android-game-hack PDF link annotation
    • http://dshikr.ru/images/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/earn-robux-sites_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/free-dominus-roblox_GM431946152.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_off00004bf7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BF7 24720 bytes
SHA-256: 0d6a566f18a9cbb18790fdfce0f6a4add56ec37f9d56df342ca09aa3ea965fae
font_01_sfnt_off00008390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8390 19188 bytes
SHA-256: 89862b23db33f89fc4e06f26f29a139fa923ad6cd018f80821c34a6209bfa909

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