Malicious PDF — malware analysis report

Static analysis result for SHA-256 670a198cf4c27cda…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 14:31:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c6a76aed3f58a8a3570716f16d87bb18 SHA-1: 8661520568075240f02812d55139559a47d9a9a6 SHA-256: 670a198cf4c27cda77a25cf8256c649d31ab6ad9a5be4dabf8d0d847a788b815
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, primarily offering game hacks and free in-game currency, which is a common lure for phishing and scamming operations. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent. Although no scripts were explicitly extracted, the document's structure and content suggest it's designed to redirect users to potentially harmful sites.

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.tw/app/406889139/free-spins-and-coins-for-coin-master-game-hack PDF link annotation
    • http://www.salwangurgaon.com/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/wurst-18_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-outfits-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/roblox-free-download-linux_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-codes-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/earn-robux-sites_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-on-facebook_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
font_00_sfnt_off000032d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32D0 22936 bytes
SHA-256: fb52ea591417da80bd8ac1030d1e067844cb02b8a82c0a3af0e43c6f7f42bf42
font_01_sfnt_off00006632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6632 18348 bytes
SHA-256: e3514f5c13c59f74fe131b320bb4a7a21799b0fccf5b53c141d50f68870e844d

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