Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f088de36119f89…

MALICIOUS

PDF

42.4 KB Created: 2021-05-19 11:12:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 984a586f789dce23c521459555af9122 SHA-1: 1b5da0d2ab95c6e958baac25235ab7f1e3e369a3 SHA-256: c8f088de36119f89c0cad3870c884e5348e2947327689ef098ba305b683415f5
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/corn-master-game-hack PDF link annotation
    • https://www.dossiermedicina.it/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/getrobux-info_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/robux-generator-com_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/mcpe-client_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • https://www.dossiermedicina.it/images/how-do-you-earn-robux_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_003_off000047f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F2 29488 bytes
SHA-256: ca3fffd83e5248048ae8760acf04a76168e30f3a4d6728f8e498404b6e4069dd
font_01_sfnt_off000085cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CD 17428 bytes
SHA-256: bb7ddfb5eeb119ecc025e94c1b8f2696886702df12a5472958d742496d82a376

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