Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a714eb8f56836ee…

MALICIOUS

PDF

46.9 KB Created: 2021-06-09 05:46:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 63dad0cf9ae3c544a0810891f3e5316b SHA-1: 14e592560db53e53d8bb71055b8013b9f67f0b28 SHA-256: 0a714eb8f56836ee39014f140566dd6b243696d4812368fdd89e052e5ec6b0eb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1071.001 Web Protocols

The PDF document impersonates Amazon to lure users into clicking a link that leads to a download for a "hacked client" related to Roblox. The embedded URL, https://netcdn.tw/app/431946152/how-to-get-hacked-client-for-roblox-game-hack, is hosted on a domain unrelated to Amazon, indicating a credential phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/how-to-get-hacked-client-for-roblox-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.tw/app/431946152/how-to-get-hacked-client-for-roblox-game-hack PDF link annotation
    • https://ibelive.tw/image/data/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/50-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-free-clothes-hack_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
font_00_sfnt_off00004f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F2B 29160 bytes
SHA-256: 96dd9e0aad88187844124de4009efc283091f2acad0a9f3eb13cdc7b6bba4a49
font_01_sfnt_off000092ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92ED 18908 bytes
SHA-256: 712f0258f648bd40d01ada2366f33b89cd4c34c57552b7c8c5921f4f42470f1f

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