Malicious PDF — malware analysis report

Static analysis result for SHA-256 e738a595393ee981…

MALICIOUS

PDF

34.4 KB Created: 2021-06-28 22:17:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d348225acb4fd06101db9d4ca335ee5b SHA-1: 89fea3bfea12fc63db2fa902360b7c50c89a21f5 SHA-256: e738a595393ee981290ac7621b623f70c37baed27fba9d047f4b6bfcf53ce252
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 0.9980

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 http://netcdn.co/app/431946152/roblox-cheats-robux-generator-game-hack PDF link annotation
    • http://www.bestbist.com/assets/uploads/pages/files/como-usar-hack-en-los-juegos-de-roblox_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/pro-pubg-xyz-uc-hack_GM1330123889.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/watch-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/roblox-obby-online-free_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/roblox-robux-exploit-hack_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://www.bestbist.com/assets/uploads/pages/files/play-minecraft-free-online-no-download_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
font_00_sfnt_off00003004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3004 22380 bytes
SHA-256: dfc4b0759a5208845e66fc2a6431ccf2602fa36d65b572313b3ee7182aac6ca4
font_01_sfnt_off000061a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A5 18896 bytes
SHA-256: eaeb46872931e851aea3ba3b9d3207d2c188a1c271173da085550b4c130bb0ee

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