Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2b75fc2b787c9e5…

MALICIOUS

PDF

44.3 KB Created: 2021-06-04 03:20:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 286b3aec9f9594f9437531b483b52804 SHA-1: 23fda965426f76dc970fb20be1619a43c3e065b0 SHA-256: b2b75fc2b787c9e5ca412c06782172a6f726dca1fe12870c2f7caee2a5163d03
82 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a potential application download, disguised with lures related to game hacking and currency acquisition. The heuristic firings indicate the presence of external URIs and a visual download button, further supporting the malicious intent. The document also suggests password protection for an archive, a common tactic to bypass security filters.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.online/app/479516143/toolbox-apk-game-hack PDF link annotation
    • https://library.fdk.ac.id/repository/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-earner_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-only_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • https://youtuIn 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_004_off00005081.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5081 25796 bytes
SHA-256: ac005ca650d289ce423f3ceb7e9011f7fa03c7958863ae2047f88e21a1051a94
font_01_sfnt_off00008b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B58 18048 bytes
SHA-256: 646fad9d756b15d24d99e1fc175dfd3628bdaadc493ae9366c014baed99d5fea

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