Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa45953c1ad996a…

MALICIOUS

PDF

35.0 KB Created: 2021-06-30 13:47:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: cada9cf8f7702fc0cf63a791c7e21c99 SHA-1: 7986676ee1a47b4393e5cb04466a5b68150ebdd4 SHA-256: 5fa45953c1ad996aec78d1685da2401728e66a8df50ba530e50e1fe80a6a2e0b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous URLs and a call-to-action phrase, suggesting a lure for downloading malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and a password archive lure heuristic indicates an attempt to trick the user into downloading a payload. The document body explicitly mentions 'how to hack someone's Roblox' and includes multiple links to related content, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/how-to-hack-someone PDF link annotation
    • http://smkn1salatiga.sch.id/library/repository/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-free-robux-hack-no-password_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-to-get-free-robux-in-roblox-on-ipad-2021_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/pokemon-go-free-hack_GM1094591345.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-robux-limited-time-offer_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-cheat-furk_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/hack-roblox-btools-2021_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-draw-roblox-2_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/dugeon-quest-roblox-hack_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-hacount-hack_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-infinity-rpg-hack_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/tiktok-follower-bot-free_GM835599320.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_off00002efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFC 22648 bytes
SHA-256: 1b9c10fc107c3f68d292b8229f940b674619930a4082f4dfb7e0a76f0287448c
font_01_sfnt_off000061c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C9 19636 bytes
SHA-256: 93994fd08fd002a8b8aeac6e20bebe5c5b6bb60206c7b610616757e9e7809af1

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