Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d4b4febcfc0e04d…

MALICIOUS

PDF

46.0 KB Created: 2021-06-09 12:01:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c91bbd62c9c8d5dabfb8ba9958e47833 SHA-1: a8d6273b5f24397bee6b9a1a742cedc0e77ffb7c SHA-256: 6d4b4febcfc0e04dd3b5d39a213e6c5f28d25f8c61e2ff2cd42aaaeb7c491ec3
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a call-to-action phrase, suggesting a lure to download additional content. The ML classifier also flagged this PDF as malicious. The primary URLs point to game-related hacks, indicating a social engineering attempt to trick users into downloading potentially unwanted or malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/roblox-hack-2021-free-robux-generator-game-hack PDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/flip-master-coins-hack_GM406889139.pdfPDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-free-name-change_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/pokemon-go-free-download-play-store_GM1094591345.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/get-more-robux_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-robux-hack-november-2021_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-100k-robux-for-free_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-without-verification-2021_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_off00005141.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5141 26692 bytes
SHA-256: 58148d862fcf3673b28c5d726d617e5f09de7b7b17fbb38a96e484445bf2488d
font_01_sfnt_off00008f38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F38 18992 bytes
SHA-256: 11dced437f35884c909494f5c20f958151b2840587773470703180b1d14d1caa

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