Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab6d4aeb8d05eb19…

MALICIOUS

PDF

35.2 KB Created: 2021-06-29 01:03:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b1d6d0af05068810bd56d7ec250e1549 SHA-1: 28294efe62ee1f1ddba98fc0d5b1e8595e06a979 SHA-256: ab6d4aeb8d05eb194400dc1d0a0078825a40952dec315ae72712fcde7c4bf5c6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 4

  • 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.
  • 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/free-level-7-script-executor-roblox-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-cheat_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-controversy_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hacks-scythe_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/is-tiktok-free-to-download-on-iphone_GM835599320.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hacks-para-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-robux-hack-2021-easy_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-premium-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_off00003061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3061 22864 bytes
SHA-256: 774f93905d21ee2ded98694cdb0b34fb6ecea16e295e16b5c3b4587d2fee4cc3
font_01_sfnt_off000063b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B2 19360 bytes
SHA-256: a92202d6e2dbfe3127f4581c18fba12d01ee5bca73c2b1ef8856f5a34aa075cc

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