Malicious PDF — malware analysis report

Static analysis result for SHA-256 7893d65416271aae…

MALICIOUS

PDF

35.5 KB Created: 2021-06-28 22:40:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 288d7a77f1ad104d06d681d4621967dc SHA-1: e71ff1dd91c777eff02842220002a62fb46aa642 SHA-256: 7893d65416271aae1e733e8d11fdb1dc4594057528271fd0d8670c27646cd2de
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs and a call-to-action phrase, strongly suggesting a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious with high confidence. The document body and extracted URLs indicate a lure for game-related hacks and currency, likely leading to the download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/lingojam-roblox-hack-game-hack PDF link annotation
    • http://1.179.208.67/ckfinder/userfiles/files/rewardrobux-com_GM431946152.pdfPDF link annotation
    • http://1.179.208.67/ckfinder/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/como-hackear-robux-en-roblox-con-cheat-engine-66_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/roblox-chat-cheats_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/free-hair-in-roblox-not-model_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/cheats-for-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/earn-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/cheat-codes-for-coin-master_GM406889139.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
font_00_sfnt_off000033bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33BB 22380 bytes
SHA-256: 32a273b84852d5244df1c383f9367d014ad9d3ebfbcc7e7b23b6896663447889
font_01_sfnt_off0000654c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 19224 bytes
SHA-256: 83a5bbeb25feb19e1a5f6fa51bef3ea6da2284547a50fd599ef133778b27da39

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