Malicious PDF — malware analysis report

Static analysis result for SHA-256 747af5645f0749f6…

MALICIOUS

PDF

43.3 KB Created: 2021-05-15 07:17:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f2e396213bb22d61db742849c7fa3263 SHA-1: 07516f4b0c501c74a664e2fe2fdb34e059e37c54 SHA-256: 747af5645f0749f6eb820ffedc23fb276316de52070fd0e8be9922db5ffd1509
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 0.9969

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/coin-master-free-coins-and-spins-daily-summary-game-hack PDF link annotation
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-install-free_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-robux-thumbnail_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_off00004b7a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7A 25492 bytes
SHA-256: a9bc4e784929928f82e1837a548035a961e5aa1298bd33c890ab4d16f4530157
font_01_sfnt_off00008516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8516 18880 bytes
SHA-256: 80e94ef00212ac5fe4220c165773dd6e8ea516dcb328b8ee80116dae5b806def

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