Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a9b2d284e366688…

MALICIOUS

PDF

45.5 KB Created: 2021-06-01 22:10:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3d87b706041576be00b2afd743a19655 SHA-1: 6233b0fb747f124a5aa5e010115e0236792a3d7b SHA-256: 2a9b2d284e366688281f8a69a22b5f92902a11ba1cb35dc3ee13e2f2b474e039
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and includes an embedded URI pointing to a suspicious URL. This combination strongly suggests an advance-fee scam designed to trick users into visiting a malicious website. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/431946152/do-you-want-free-robux-game-hack
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-be-a-creeper-on-roblox-for-free_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/nonsensediamond-roblox-hacks_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/coin-master-hack-without-verification_GM406889139.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-hacks_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-please_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/fly-hack-prison-life-roblox_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-accounts_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-no-verification-2021_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-free-robux-codes_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-minecraft-account_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-highschool-money-hack-cheat-engine_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-hack-a-roblox-account-with-cookie-editor_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-no-offers_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-a-phone-easy_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-exploit-executors-free_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-accessories-in-roblox-codes_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-swordburst-online-level-hack_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/hackaron-com-roblox-hack_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-tdm-shirt-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051b1.bin
706c786ad7789a5a5db784db1993fcea7ec5902c7a8e647c8dafea62135c3f16
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B1 25792 bytes
font_01_sfnt_off00008d4d.bin
c4ed4755c08d66e8f0bdd10f211839f70ec9e853b7b1d01b35b2f032e05a1baf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4D 18876 bytes