Malicious PDF — malware analysis report

Static analysis result for SHA-256 81506e8b485d1c58…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 17:27:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ba8c65afbd726f69d0d8959fb4465431 SHA-1: b6ade91de6a2c663c3a5d3d79fdb2835beb8a122 SHA-256: 81506e8b485d1c583517a1df529418be7ef5a28358afec35059e388d80677524
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/406889139/how-to-get-coin-master-free-spins-in-email-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/free-robux-today-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-robux-pastebin-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-doge-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pubg-uc-through-easypaisa_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-for-pc-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/https-wwwrobloxcom-hacks_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-weight-simulator-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-roblox-ropa_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacking-menu-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-mad-paintball-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-codes-to-get-free-stuff_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/www-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-games-that-actually-work-no-password_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-roblox-speed-hacks-cheat-engine_GM431946152.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_off000030aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AA 22032 bytes
SHA-256: 67cbbc7080ab083147aec9d998290e193864c8c06b4e9c9c99264f8534bd26ed
font_01_sfnt_off0000614f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614F 18672 bytes
SHA-256: c55de2333964849f39731cb570fc090e4780defca43c923d13d7351852810530

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