Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac7b855b14d0b10…

MALICIOUS

PDF

34.6 KB Created: 2021-07-07 05:10:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 51b897a61d950d476c7ed74aded49112 SHA-1: aa1a951df91f5c78fbb5eed7402f00a274d1c08e SHA-256: bac7b855b14d0b108abc048583092f132a64638542c427ce74410e9e30ba20ee
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document employs a common lure of offering free game currency and hacks to entice users. It contains numerous embedded URLs pointing to external sites, such as http://netcdn.tw/app/406889139/mcpe-master-free-coins-game-hack, which are likely used to distribute further malware or engage in phishing. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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/mcpe-master-free-coins-game-hack PDF link annotation
    • http://regiefranchet.fr/userfiles/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-robux-steps_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/roblox-field-of-battle-cheats_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/roblox-gainer-free-robux_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/robux-gainer_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/roblox-hack-ejector_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/get-free-robux-on-roblox-without-human-verification_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/codes-to-get-free-robux-may_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-robux-2021-promo-codes_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-In 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_off000030d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D3 23052 bytes
SHA-256: 250814c809684e5a271965c694416e34f2babbd7195dba6d8dea07a222efdf79
font_01_sfnt_off000064d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D3 18176 bytes
SHA-256: 1693082916f189875d4d64fe848321ecd7215bfa80120e82d4d23c7be60bd4f3

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