Malicious PDF — malware analysis report

Static analysis result for SHA-256 f811849a16190aac…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 23:38:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0d4b28c0aa3637d488e512bf5367df59 SHA-1: 177a54661588b10a242f309a4685fa8bf29c7534 SHA-256: f811849a16190aac07c832b00caf81638ceb8eb870adb9b9c983a42382d21f98
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/coin-master-free-coins-and-spins-game-hack PDF link annotation
    • http://cintabaca.org/katalog/repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/robux-and-tix-hack-generator_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-game-cards-free-pin_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/reaper-quest-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-hack-your-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-roblox-mad-city-vip-server_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hack-roblox-kali-linux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/final-stand-2-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/monster-slaying-simulator-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-robux-on-a-chromebook_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_off000031a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A1 22776 bytes
SHA-256: c88f4919654b500923cf31cb0614d171ff1b928bd2da8f41934e35d675da3856
font_01_sfnt_off000064d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D4 18348 bytes
SHA-256: 8f4e14d352258b2a04c4750a5c5e6ee18e44525ef82eed3820f54d352c64eef8

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