Malicious PDF — malware analysis report

Static analysis result for SHA-256 07b201aefc27931c…

MALICIOUS

PDF

47.4 KB Created: 2021-06-02 22:45:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8dc1d36cfd0b77633279ffcd7c0acff7 SHA-1: d298f42bc2df3a0f405eb56e0e8c7505246af48a SHA-256: 07b201aefc27931c34f730635f5a1f5429c98d4504a0039e3257a4ae44966c43
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, appears to be a lure for game-related cheats or hacks. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack vector is likely spearphishing attachment, leading to a redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/431946152/roblox-2.0-body-free-game-hack In PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/minecraft-items_GM479516143.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/freespins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.journalofpracticenursing.co.uk/uploads/files/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005372.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5372 30212 bytes
SHA-256: c5f2d2ad9592094ba95fd07775651b8e73fef94f0592f5ad024a93ffb13345cd
font_01_sfnt_off00009594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9594 18664 bytes
SHA-256: 5fa79bff328ad93aa4b8e97b18f4d1a3984dde15c5c0ce540ec0c59beb720dae

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