Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f6bd622e805ba58…

MALICIOUS

PDF

34.8 KB Created: 2021-07-10 03:25:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 604631ce18bb24819eadefa7b0d1edb5 SHA-1: 43cae945a8e0b8c096bd1bd8cc556081c26018b9 SHA-256: 8f6bd622e805ba5838fea9033bf0a73461cd99d9d152f060ba5b8e726705a5c9
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-spin-link-daily-game-hack PDF link annotation
    • https://www.itc-nekretnine.hr/files/free-roblox-card-codes-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-get-free-robux-without-password-or-hacking_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/robux-hack-real-2021_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/dance-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-free-promo-codes-generator_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/l-free-robux_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-team-hack_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-offline-apk-free-download_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-robux-generator-exe_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
stream_002_off00002f93.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F93 23356 bytes
SHA-256: 8debfe8cf2dfbbe84c7c279655a05d01b9e2b3e17a457f56ade9941e5e6c2a0b
font_01_sfnt_off00006404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6404 18768 bytes
SHA-256: 498336de1cd41264755a901ac6a708e704256ea26d4bea7bf38f3dffbc9a1f74

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