Malicious PDF — malware analysis report

Static analysis result for SHA-256 f91f905cd60fd894…

MALICIOUS

PDF

41.9 KB Created: 2021-05-16 08:03:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 4b6d78431c67834e72552bcc5b015259 SHA-1: 0c2953ea575b91b288b9e682c72baa3040be0964 SHA-256: f91f905cd60fd894afa9245c86234c15898aae607d3400b2f42b271ab444e3c1
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 0.9971

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 https://netcdn.xyz/app/406889139/free-spin-link-coin-master-today-game-hack PDF link annotation
    • http://finalstand.org/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://finalstand.org/images/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • http://finalstand.org/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • http://finalstand.org/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://finalstand.org/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://finalstand.org/images/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/tiktok-minecraft-hacks_GM479516143.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_003_off00004854.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4854 24908 bytes
SHA-256: e824311ca07128cfc5ad211a0ac40182a37dd6ec7bf7934bcf8557fc92b3b99d
font_01_sfnt_off000080bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80BD 18412 bytes
SHA-256: e587088874bde045b6c3de0610cebf0d89afe726cd39a539bf85554ca93a9bfa

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