Malicious PDF — malware analysis report

Static analysis result for SHA-256 67931ed99e54aba0…

MALICIOUS

PDF

47.4 KB Created: 2021-05-31 00:10:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f5d471ceb0d39228f5f83d7c3b99f81a SHA-1: 154f58b01d101802ee9a0fd818c509cc934e9e1b SHA-256: 67931ed99e54aba0479a5061b9bb80db4fc4d8a98c70a7c88a6cb018c73849de
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document exhibits characteristics of a malicious lure, specifically a remote support tool pretext combined with a download button, aiming to trick users into downloading potentially harmful content. The presence of numerous embedded URLs, including one pointing to 'netcdn.xyz/app/was-minecraft-ever-free-game-hack', strongly suggests an attempt to redirect users to malicious sites. While no scripts were explicitly extracted, the ML classifier and heuristic firings indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8017

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/was-minecraft-ever-free-game-hack PDF link annotation
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/hack-robux_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-robux-websites-no-human-verification_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_off0000552d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x552D 24884 bytes
SHA-256: f8ac6185af0d25f8d0e6d5346d4679915b7b46a398ce555d69de8cbf0f8d71dd
font_01_sfnt_off00008dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDA 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off0000977a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977A 17880 bytes
SHA-256: fa9564ce5793f03604dae66ea4261aaef87f9e1e7420b634dd5196a1b51aa919

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