Malicious PDF — malware analysis report

Static analysis result for SHA-256 a393e4c13e0cac95…

MALICIOUS

PDF

47.3 KB Created: 2021-05-16 23:31:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 78d0cf24863d9d6420175c205bd58514 SHA-1: 6a49a8594f90daefeaadbf4a46ba5b67180eca75 SHA-256: a393e4c13e0cac9535dd5871d03bfc5ba1577d0ee4d91b2de157cf0e75ee6edb
82 Risk Score

Malware Insights

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

The PDF document contains a lure for a game hack, impersonating Apple and directing users to download a file from a non-brand domain. The embedded URL and the document body text both point to a malicious download, likely intended to deliver malware or facilitate credential theft.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/coin-master-3.3-hack-version-download-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/coin-master-3.3-hack-version-download-game-hack PDF link annotation
    • http://elektrofahrspass.de/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-robux-codes-2021-real_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
stream_003_off00004c84.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C84 26000 bytes
SHA-256: fe9d8c17ce4f7e81b32b3c88876669101bff7d57d891b1cda5afa268565ee986
font_01_sfnt_off000085fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FC 4448 bytes
SHA-256: 50d21d941ddcc7964c1151c9bdfe58f20009ee157f91403d633a6ffe322b631f
font_02_sfnt_off00009502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9502 18668 bytes
SHA-256: c9c08938a486310b32848fcf2d5752b2e836f5cdfc047cd8e0e772ef14e34309

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