Malicious PDF — malware analysis report

Static analysis result for SHA-256 c084a4bd6b4784e8…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 20:06:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f222c9cf575570198e09a8379ff4df23 SHA-1: 6d97f4c8ce31b3692d702dcec76ff2e9b86ce32a SHA-256: c084a4bd6b4784e8bbbf658353dbd39e8ecad70c9ae2ee2b948e1053e19ea2c8
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.tw/app/431946152/free-roblox-hack-us-game-hack PDF link annotation
    • https://library.um-sorong.ac.id/repository/coin-master-fan_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-online-generator_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-snow-shoveling-simulator-free-santa-bag-infinity_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/all-anthro-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/pastebin-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/best-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-hack-phantom-forces-2021-roblox-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-bee-swarm-simulator-tabby-bee-cheat_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-free-robux-without-a-generator_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-assassin-how-to-get-free-knives_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.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_off00003149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3149 22144 bytes
SHA-256: 23070a18d1dabaf06c312fbbebf1e44629584fc1a5d6f271d3f9472d19e7da7c
font_01_sfnt_off00006234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6234 18820 bytes
SHA-256: 1a4205a63a4c62ee5e2ece7937cc582039d18e2188305b723340f9fc22749da6

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