Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c689acf60949770…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 17:24:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1adc63f0e9753fde759e9341d7f4dce9 SHA-1: e324eb60883e389684f4ceda8109e56bb51b02cb SHA-256: 1c689acf609497705bf5dc5d1e3eefee561702d2e6d17b9c21e64bb328d1af78
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/roblox-hack-me-robux-game-hack PDF link annotation
    • https://library.institutpendidikan.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/adopt-me-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/exploiting-t-shirt-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hacks-for-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-no-clip-in-roblox-no-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/best-free-roblox-schirts_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/get-free-robloxgg_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-win-free-robux-on-chest-open-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-roblox-logins-password_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-cheat-engine-hacks-admin-script_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hack-roblox-robux-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/pokemon-go-free-12k-eggs_GM1094591345.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hack-roblox-cbro-download_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-hack-no-human-verification-or-survey_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_off00002f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2B 21996 bytes
SHA-256: 6c9b8df428f5abe1d0f734b891ef25a86f376b631d2551db909be55ece1ac8b6
font_01_sfnt_off00005fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB4 18992 bytes
SHA-256: 86b86f91b54ee921683d76bd91845474e74a2f02ddd9d950759e972449d3ecfc

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