Malicious PDF — malware analysis report

Static analysis result for SHA-256 275fec4ffa3d4369…

MALICIOUS

PDF

45.3 KB Created: 2021-06-14 01:00:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0691ca446530d9b5d47fe39eed7079ff SHA-1: 1af8638c35ae246a80b9a4be652ae7d3b8de033d SHA-256: 275fec4ffa3d436904417274ee2f4d217039ade362d9222ba2bde11f38a213f8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document impersonates Amazon to lure users into clicking a link for free Robux. The link redirects to a malicious URL, indicating a credential phishing or malware distribution attempt. No scripts were extracted, but the embedded URI and heuristic firings strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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: http://netcdn.co/app/431946152/do-you-want-free-robux-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 http://netcdn.co/app/431946152/do-you-want-free-robux-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-games-that-give-you-free-clothes_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-lumber-tycoon-2-i-cheated-for-this-box_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/when-tiktok-free-download_GM835599320.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/gain-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_off00004aa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA6 24312 bytes
SHA-256: d50b7cd63d7dbc642830126069ccba5d7903e7cbdfb146b90552312e851642fa
font_01_sfnt_off00008265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8265 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00008c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C75 18876 bytes
SHA-256: c4ed4755c08d66e8f0bdd10f211839f70ec9e853b7b1d01b35b2f032e05a1baf

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