Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0bb388f3d8fd18…

MALICIOUS

PDF

46.0 KB Created: 2021-06-08 20:47:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7298dcb5561bde17a7ebb737202e7fe7 SHA-1: 63389cc9dcdb4eb761250b38ef7e2c0904e26787 SHA-256: 7e0bb388f3d8fd18a0e6e2cc03d1f0cc920fc323c98c4125176715af94f8235f
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links to other PDF files, many of which are SEO-optimized with keywords like "Roblox Hack Tool" and "free robux". The primary URL points to a "roblox-hack-tool" page, indicating a lure for potentially unwanted or malicious software. The heuristic firings confirm the presence of a large number of external PDF links, suggesting a link farm designed to attract users with deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-tool-no-download-no-survey-game-hack
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spin-and-coin_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-generator_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-pe-for-free_GM479516143.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/oprewards-com-robux_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-online_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/free-robux-without-verification-or-survey_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/free-robux-sites-2021_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/oprewards-robux_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-verification_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-free-spins--spins_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/robux-earning-websites_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/official-coin-master-free-spins_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/minecraft-games-free-download_GM479516143.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/how-to-get-free-skins-in-minecraft_GM479516143.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/roblox-troll-outfits-free_GM431946152.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • http://elearning5.mts-mifdakpj.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-free_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053ae.bin
925e1c0a3dbc2a97f508915a53ed801b2e777b95579da456f95b45a8b90afce6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53AE 25204 bytes
font_01_sfnt_off00008e60.bin
03f36f697bd9b29f0424e8bf6d06f1706630b24de1e31886fb0a21dd427444b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E60 19124 bytes

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