Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd00ac41bb7a38f5…

MALICIOUS

PDF

42.3 KB Created: 2021-05-17 20:07:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 33d1de0f7ccfae1a7d665f7cf7976b7e SHA-1: 6dd2c1869769d625b4d74af7de6ef07d6585aa3b SHA-256: bd00ac41bb7a38f5c9e26e7df3ecfbdbc6346fc3a7e393dc9753278b550805c7
82 Risk Score

Malware Insights

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

The PDF document impersonates Microsoft to lure users into downloading a "Coin Master" hack from a suspicious URL. The ML classifier strongly indicated maliciousness, and the presence of multiple external URLs and a visual download lure further support this. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest it's designed to facilitate the download and execution of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-apk-hacked-3.5.26-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/406889139/coin-master-apk-hacked-3.5.26-game-hack PDF link annotation
    • http://stitchingart.com/images/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://stitchingart.com/images/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://stitchingart.com/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://stitchingart.com/images/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://stitchingart.com/images/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://stitchingart.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/minecraft-wurst-hacked-client_GM479516143.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_off00004908.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4908 24568 bytes
SHA-256: da103765e6f768daa2d2d20c4bab284094ed26d76048e5ad6d5e8575b5e2feb6
font_01_sfnt_off00008135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8135 18732 bytes
SHA-256: eb6de58498ee2557ccb528b62e2a72b57045cb6521112ed3535261959c0adb45

Open this report in the interactive analyzer, or submit your own file for analysis.