Malicious PDF — malware analysis report

Static analysis result for SHA-256 31eeb80045902fb3…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 15:20:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 92eacef67c7d7b68b563bd7d1f24d1ef SHA-1: c256698fbfc39e6f06c879afc6e2b75b50e18f8e SHA-256: 31eeb80045902fb3883e1f001346e214694178796993ab5c7a6a33c1d460888c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector. The document body also contains the URL http://netcdn.tw/app/479516143/hacks-for-minecraft-bedrock-game-hack, which is likely the initial landing page for a scam or malware download. No scripts were extracted, but the overall pattern suggests a social engineering lure to trick users into visiting a malicious site.

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/479516143/hacks-for-minecraft-bedrock-game-hack PDF link annotation
    • https://wagstaffgroup.co.uk/media/storage/editor/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/how-to-use-redstone_GM479516143.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/robux-for-kids_GM431946152.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/robux-gainer_GM431946152.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://wagstaffgroup.co.uk/media/storage/editor/files/roblox-apocalypse-rising-hack_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
font_00_sfnt_off000033da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33DA 22696 bytes
SHA-256: 62dcd569ba2f0f2b9187818d211ff635f62c7a7bee5c4d663b69ea512b0abd94
font_01_sfnt_off00006678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6678 18560 bytes
SHA-256: 4fc295dce404a6ce2538edafe463176f3647b846dab467762a183e8310dc408e

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