Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3408198ac76cf65…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 12:32:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 239657686dfb37aecf9fe6e668867e78 SHA-1: a98b79776dded455348b0e69227f61b1e9b390a6 SHA-256: d3408198ac76cf650003b125bdc7a63b1c42973f14f8cde61cf1b8e6e02924b6
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/how-to-get-robux-on-phone-game-hack PDF link annotation
    • http://inforplace.com.br/ckfinder/userfiles/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/roblox-script-executor-free-download_GM431946152.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/plaay-roblox-free_GM431946152.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/roblox-skins-boy-free-download_GM431946152.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/justnow-freerobuxcodes2021working_GM431946152.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/how-to-hack-infinity-rpg-roblox_GM431946152.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/infect-roblox-games-hack_GM431946152.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/how-to-hack-on-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/do-you-get-free-robux-with-builders-club-2021-bonus_GM431946152.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/fabulousv2-roblox-hack_GM431946152.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/best-expolists-roblox-free_GM431946152.pdfIn PDF document text
    • http://inforplace.com.br/ckfinder/userfiles/files/roblox-free-giveaway-live_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00003069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3069 22540 bytes
SHA-256: 2c9756c001836322e949699fe83b07d5243136b9abd7fab16e3d1f734ec9c5dc
font_01_sfnt_off000062a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A5 19140 bytes
SHA-256: 1a9c92f6482942997a9b9d974b28e0e60aa0281a54bfc0aeeee9809f3ce6240c

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