Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4740323a9c8401…

MALICIOUS

PDF

39.7 KB Created: 2021-05-16 18:40:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2c1c5396401becf287a3796c533e6b17 SHA-1: 38539ce38083543e01f05c0f6332d204853ac31f SHA-256: de4740323a9c840193b98c02156dbf52c564f84db554efadeb542ddbabac4cf3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document uses lures related to game hacks and free in-game currency to entice users. It contains multiple embedded URLs pointing to suspicious PDF files, suggesting a download or redirection to further malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of remote support lures indicates a potential for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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/minecraft-1.15-2-hacks-game-hack PDF link annotation
    • http://pastoraldapessoaidosa.org.br/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://pastoraldapessoaidosa.org.br/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://pastoraldapessoaidosa.org.br/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://pastoraldapessoaidosa.org.br/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pastoraldapessoaidosa.org.br/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://pastoraldapessoaidosa.org.br/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://pastoraldapessoaidosa.org.br/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://pastoraldapessoaidosa.org.br/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://pastoraldapessoaidosa.org.br/images/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://pastoraldapessoaidosa.org.br/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://pastoraldapessoaidosa.org.br/images/games-on-roblox-that-give-you-free-robux_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_003_off00004167.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4167 25388 bytes
SHA-256: 9f51d28e1687d39731af1c9633811debbce3c10da7376872ae195101ff3e3b0b
font_01_sfnt_off000079f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F0 18168 bytes
SHA-256: db08b96da71f6ddfbe6b519ed50ce659f2c78f4173f4a3128d613ddf1b801d62

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