Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5b29aeef4bfeeff…

MALICIOUS

PDF

35.8 KB Created: 2021-06-28 12:11:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ddd1e108ef41d40801c3666667d6edca SHA-1: df9069753b6e16a666e8dcc1d0c35e624e59aa9a SHA-256: f5b29aeef4bfeeff1be816909defc5e4d6b56c7c0d4bbbb8a11c4b3a08aa534b
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-hack-unlimited-robux-free-download-game-hack PDF link annotation
    • https://new-era.com.tw/image/data/files/roblox-free-clothes-2021_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/robux-best_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-roblox-animations_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/notoriety-roblox-loot-cheat_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/admin-command-roblox-hack_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-apk-hack-uptodown_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-get-robux-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EE 22800 bytes
SHA-256: d948c6269596d08a8a97c9363d9134f5eb6fb81ea69c026da11efd277b61ee79
font_01_sfnt_off0000644d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644D 19952 bytes
SHA-256: 4423f9d9399bedbdeaa37c694379282beb0de167c7838777c8eaf17fcbf31924

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