Malicious PDF — malware analysis report

Static analysis result for SHA-256 e60c5091508d3f63…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 07:00:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 49d006521f0028e0a186f5383b715bfa SHA-1: f82e1679e392adbd80bb4fcdb81a1f0fcd840517 SHA-256: e60c5091508d3f633754105463a65c830c36361fb5a691c4a16d631a91359c60
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and generators, directing users to external URLs. It also functions as a link farm, embedding numerous links to other PDF files, likely for SEO manipulation or to distribute further malicious content. No scripts were extracted, but the PDF structure and embedded links indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.online/app/431946152/free-robux-generator-com-roblox-hack-game-hack PDF link annotation
    • https://silvterie.com.br/images/ckfinder/files/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/roblox-top_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-spins-for-coin-master_GM406889139.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_004_off000053c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53C8 25024 bytes
SHA-256: 8eed789569ce9460425711c0ffddb28a357a5dac82345aba0f99ba87f6201055
font_01_sfnt_off00008b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B16 18852 bytes
SHA-256: 4f913a2277500713712aa6cd09c4e12b5f8093088fb24eab89a43b1b22929045

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