Malicious PDF — malware analysis report

Static analysis result for SHA-256 6227e7b213a50e1f…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 07:32:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1288bb77f7cb16fe548f9317a1010733 SHA-1: 6d4d5fcf07aa1bd60700ad051d802de81a7b62d4 SHA-256: 6227e7b213a50e1f74f48670a00198104e4a46bb28e60ecd1009dbd64aff4144
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-confidence machine learning flag and a brand impersonation heuristic, indicating a credential phishing attempt. The embedded URL http://netcdn.tw/app/835599320/tiktok-download-free-jio-phone-game-hack is presented as a download link, likely leading to malware or a phishing page. The document body and numerous other URLs suggest a lure related to free game items or downloads, further supporting the phishing and malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/835599320/tiktok-download-free-jio-phone-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.tw/app/835599320/tiktok-download-free-jio-phone-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/roblox-house-pets-free-vip_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-no-human-verification-2021-pc_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/boing-arroe-free-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/adopte-me-hack-project-alpha-300-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-without-buying-stuff_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/claim-box-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-do-i-hack-someones-roblox-acc_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-a-free-face-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/dragon-ball-x-in-roblox-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-free-tickets_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/robux-offer-wall_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_off00002e91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E91 21728 bytes
SHA-256: 1c9b2d9d146bb2bfeb7dae1c1c92d7e8bb9480b1b2e72e1db470d028862fde42
font_01_sfnt_off00005e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3B 19040 bytes
SHA-256: ea1bb73a22c22c91214670042e5734d0dfc12c11460ec399fb03d8126f755f2c

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