Malicious PDF — malware analysis report

Static analysis result for SHA-256 37f74dc9afa3d41f…

MALICIOUS

PDF

42.3 KB Created: 2021-05-17 11:38:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 756fbc4c90ffde99e46dd2509a6dab1d SHA-1: 0998c599379945c28351fb73ba5bbec59838413b SHA-256: 37f74dc9afa3d41febe2d9c0ce989051dd74b68b2f0105a202bafaa1ac0c039b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains lures for free game-related content and includes a high-risk remote support lure, suggesting a social engineering attack. The embedded URL points to a suspicious domain that likely hosts a secondary payload or further phishing content. While no scripts were explicitly extracted, the PDF structure and heuristics indicate malicious intent, likely to trick users into downloading malware or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/479516143/free-minecraft-account-generator-game-hack PDF link annotation
    • https://www.advancedcube.com/uploaded_files/userfiles/files/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-today_GM406889139.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-deals_GM406889139.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancedcube.com/uploaded_files/userfiles/files/flame-gg-free-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
stream_003_off00004bbd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BBD 25212 bytes
SHA-256: 702d8854da440849a05a653c851e5d56783ff7ab1b5eec41481e575333d827fa
font_01_sfnt_off0000848e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x848E 17848 bytes
SHA-256: ac3b0f7a72dc6f29c3b7fbd43af928bb412d301226b2a88e16f0d2541e2fb97b

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