Malicious PDF — malware analysis report

Static analysis result for SHA-256 5586bc5c06a51637…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 18:52:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1e6b96c2bcc4ad90b0c910f135c28a06 SHA-1: c99067ee85c4ae9ff2f2601bf48a58ef8ddebb6a SHA-256: 5586bc5c06a51637201a7c8f11a992e56606bf68d7c75605848514ea7b62a655
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.tw/app/431946152/free-robux-no-scam-game-hack PDF link annotation
    • https://ezgolfer.com.tw/image/data/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-robux-in-roblox-any-device_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/apocalypse-rising-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/oprewards-login_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/wall-hack-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/which-games-on-roblox-you-should-fly-hack-in_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-outfits-roblox_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_off00003292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3292 22600 bytes
SHA-256: 46c41f95110c5a2839d548638409deb0ab24c0e6b29e99947fb9192caee86c20
font_01_sfnt_off0000650d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650D 18976 bytes
SHA-256: 23e221c5b5bcf2e3198359e0ed97b75398f02e20f829eab4584d68e40cba0ed0

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