Malicious PDF — malware analysis report

Static analysis result for SHA-256 e81acf04cb66ce13…

MALICIOUS

PDF

44.8 KB Created: 2021-05-11 14:01:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c7e4ac20e98c49397a1fb638684f5fce SHA-1: 7cb2cdedcbcd3ad5aa7fb9a8a83b23428ec26c96 SHA-256: e81acf04cb66ce13970a7cd14556a1892339039efec912fafb48649a7e82e021
102 Risk Score

Malware Insights

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

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 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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-attacks-coin-master-game-hack PDF link annotation
    • http://118.98.227.172/opac/repository/aimbot-exe-roblox_GM431946152.pdfPDF link annotation
    • http://118.98.227.172/opac/repository/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_off00004d36.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D36 29704 bytes
SHA-256: a8b06ed74bd2a75a571ec882f253aa550fd970b49de468458d7e432e93db988c
font_01_sfnt_off00008e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E54 17880 bytes
SHA-256: 20084e12e1caf1d14627ac7af16b157ed4b772c86f666b3cc0713bbb3e371b2a

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