Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7cbb701b2c16110…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 09:24:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a4d2bfca9f0896d135ac97372d196a6f SHA-1: 6ff662c6e9e1862f432b07bb770f64f375821bd0 SHA-256: b7cbb701b2c1611055929ad17709c04ac1242734229f824a1d0239ed28f3f683
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a document body that explicitly advertises 'Free Robux Hack' and similar game cheats, indicating a social engineering lure. The presence of external URIs and an IP literal in the PDF, along with a high ML classifier score, strongly suggests malicious intent. While no scripts were directly extracted, the document's structure and content point towards a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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 http://netcdn.tw/app/431946152/free-robux-hack-game-hack
    • http://111.68.26.74/widyapustaka/repository/how-to-get-the-roblox-20-body-for-free_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-com_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/pubg-uc-600_GM1330123889.pdf
    • http://111.68.26.74/widyapustaka/repository/commen-avoir-robux-free_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/hacks-para-roblox-tener-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-cheat-codes_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-tv_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-70-spin-link_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/minecraft-java-edition-for-free_GM479516143.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-uk_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/top-car-games-on-roblox-free_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/commands-for-free-admin-for-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-followers-on-tiktok_GM835599320.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-spins-cash_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-daily-spins-link_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-gen_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/get-free-robux-2021-no-survey_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/master-hack-coin_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f94.bin
de921c234d4ca8c18b349b4e4173e5452aeddc37b701d1da0b321b0e84e396f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F94 21872 bytes
font_01_sfnt_off00005fc4.bin
dc79040e010cad5ef573560dd0163568f4a40b7ac77bac9f212c194fdd2f4c7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC4 18884 bytes