Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0fcec3d760184a…

MALICIOUS

PDF

35.6 KB Created: 2021-07-05 20:52:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 99fb0eea78bec2182b9b1d01a41c3c0f SHA-1: 2b8c77ccb95c75c0436d51e5c2a898974594df9a SHA-256: 6d0fcec3d760184ac59645aac6e406083f497843fa95466bd5ccf8cc4db2ed5f
122 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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.tw/app/431946152/free-roblox-usernames-and-passwords-game-hack PDF link annotation
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-twisted-murderer-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/pubg-uc-lucky-draw_GM1330123889.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/what-is-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/where-to-buy-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/when-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/18-hacks-de-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/best-free-hair-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-cheats-2021exe-download_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/tiktok-free-online-books_GM835599320.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-ben-10-cheats_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-earner_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-apoc-rising-cheat-code_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-playstation-4-free_GM431946152.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_off00003342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3342 22296 bytes
SHA-256: b7dd4676e01b472e1b58b2c9768f53f7e546d38e379a97763f3452ac5124432a
font_01_sfnt_off00006511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6511 19404 bytes
SHA-256: b4d7e0718cadd6570b52e100aa7612a9b6b6c25f53d59374595f6af98c828d97

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