Malicious PDF — malware analysis report

Static analysis result for SHA-256 60304bde7738b51f…

MALICIOUS

PDF

35.5 KB Created: 2021-05-21 16:07:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4a35ba6ddc4a91bfc0b3f4de0b650653 SHA-1: ace9034f6dd18d3c0aed7879388cdf54c23e03c4 SHA-256: 60304bde7738b51fbcffabbe09bf6918935bcda64750a4804cbea9ecf6c582d5
102 Risk Score

Malware Insights

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

The PDF document contains lures for downloading free game-related content and explicitly instructs the user to click a download button. It also contains a high-risk lure for remote support tools, suggesting a social engineering attack. The embedded URLs point to potentially malicious download sites, and the ML classifier strongly flagged the PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 5

  • 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
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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-multiplayer-minecraft-server-game-hack PDF link annotation
    • http://www.cosver.nl/images/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.cosver.nl/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.cosver.nl/images/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.cosver.nl/images/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://www.cosver.nl/images/hack-coin-master-with-lucky-patcher_GM406889139.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_002_off00003277.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3277 24232 bytes
SHA-256: 47358d6900fa6fac242f4b623d265f43282725d688f640f06c775bac65235b3f
font_01_sfnt_off000069a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A4 18252 bytes
SHA-256: 15432e288a3c492c6d4ea8af11726bc455bd5b0901c9f366813dc1a1d3aad7a5

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