Malicious PDF — malware analysis report

Static analysis result for SHA-256 86af58d81ee497e3…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 11:12:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8009b553809b6e38214cd9b826105214 SHA-1: ea8842f10fc3ffd6707697be4b0386310c8bfc7f SHA-256: 86af58d81ee497e3ce36d5316959d6a61f2ad548b56979084a0ecfdd670f216f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on 'free generator / game hack' lures for popular games like Coin Master and Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates the intent is to redirect users to potentially malicious websites. While no scripts were explicitly extracted, the nature of the lures and embedded URLs suggests a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

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/406889139/free-spin-link-coin-master-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-map_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/app-cheats-online-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/pokemon-go-free-12-km-eggs_GM1094591345.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_off00002f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F70 23272 bytes
SHA-256: 8d6bfd3f78eac946ea36a712affa0005c906528d856c7e9a2e6288f2f69cdc2f
font_01_sfnt_off000063fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FA 18344 bytes
SHA-256: 05274da8f0b2c24f990b03f912799dd404877cbb0fa71ac5363d7c288192e7fe

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