Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c3f2f8756ef6b31…

MALICIOUS

PDF

45.4 KB Created: 2021-06-09 04:36:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ac131b03b568a2059a2e15483e7826a5 SHA-1: 10a8005e673c2ffc52d98d7ff577c1ad95cea7e0 SHA-256: 1c3f2f8756ef6b3168565a757f5bbdf0cfe69fce6406737a34203d502dc7743f
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 0.9864

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 https://netcdn.tw/app/431946152/how-to-hide-cheat-engine-from-roblox-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/tiktok-free-books-website_GM835599320.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pokemon-go-free-808-pokedex_GM1094591345.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/robux-gratis_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5283 24744 bytes
SHA-256: eb5fc5426c03605fc4f471bb63502a76fea0c7432ac367e82e24770da54f33c4
font_01_sfnt_off00008ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 19452 bytes
SHA-256: b62c6a476277e908d7dbb569bd5913b8c1f673a8ae18041ed67872ebd0147806

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