Malicious PDF — malware analysis report

Static analysis result for SHA-256 0802bd79ce55efa9…

MALICIOUS

PDF

44.5 KB Created: 2021-06-11 07:47:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6ba9348360cac42b2be7d19b4bdbbd89 SHA-1: 1a1f242c54562ae63595abaf29cf1e9817491523 SHA-256: 0802bd79ce55efa9ca679671ec2c055fc34aabde82194552bad29e5dfefca6fe
82 Risk Score

Malware Insights

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

The PDF document contains a lure related to free Robux, impersonating Amazon and directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious. The embedded URLs suggest a phishing or malware distribution scheme, likely involving exploitation of the PDF reader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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-free-robux-and-tix-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-free-robux-and-tix-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-in-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-gainer_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/more-robux_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_off00005223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5223 24492 bytes
SHA-256: e25e8511070201a9c00c085859826e3003b5ec58df085b1e75ff7e7c268d3218
font_01_sfnt_off00008a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A87 18576 bytes
SHA-256: a17f55142e3203d04824008dbff69ef7c0f0cd71841fdd051357501a33399a85

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