Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f6c64cb9f0cbae…

MALICIOUS

PDF

41.6 KB Created: 2021-05-18 05:48:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2fd8c80164a678db2fbded02d273c199 SHA-1: 520a89469121d954597b2b81887116b39db99d0b SHA-256: 56f6c64cb9f0cbae39ce0d72850ec5b6e03f8890a8e0a0a35b4ff0870c987d6e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains numerous links impersonating popular games and services, such as Coin Master and Facebook, to trick users into clicking. The primary malicious URL, https://netcdn.xyz/app/406889139/free-coins-coin-master-game-hack, is presented as a lure for free game currency. The ML classifier strongly flagged this PDF as malicious, and the presence of brand impersonation for credential phishing or malware distribution confirms a malicious intent.

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/free-coins-coin-master-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/free-coins-coin-master-game-hack PDF link annotation
    • https://consorziocsa-asicaivano.it/images/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/roblox-free-items_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/robux-for-kids_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/coin-master-facebook_GM406889139.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
stream_003_off00004a0f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A0F 25036 bytes
SHA-256: 96e00baccb7ef64c7cfdb27d77c3d2d36467f526794d50c88a7ce2d9fa93e48b
font_01_sfnt_off0000820e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820E 17712 bytes
SHA-256: fd51fa1b849cf95139b510f282bcd47e41e352499df1938c7ca947a320e7b070

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