Malicious PDF — malware analysis report

Static analysis result for SHA-256 34a7265532d0ef21…

MALICIOUS

PDF

45.1 KB Created: 2021-06-07 16:48:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 881b348fe5bda5e1e9ea4cc4cead4971 SHA-1: 65631231cd1951491c5e69232cbaf7a833ff92c8 SHA-256: 34a7265532d0ef2175535826aef8047494a5d2d24d867cb1a37044eb93a0f8c7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs pointing to sites offering game-related cheats and downloads, strongly suggesting a lure for malicious file downloads. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document may instruct users to execute commands, further supporting a malicious intent. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.tw/app/431946152/free-account-roblox-2021-game-hack PDF link annotation
    • http://apartstmichel.com.ar/images/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/roblox-free-book_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/minecraft-114-download_GM479516143.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/roblox-hack-site_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_004_off000051f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51F7 25216 bytes
SHA-256: 3d4102c2e8630e00065aaece15125cd6981d2c602d8093bd52ff4f243062e234
font_01_sfnt_off00008c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C79 18596 bytes
SHA-256: 49dd130833fa0cd6018d5b82740263a755cad87b9d689d18589cb9fa20820e79