Malicious PDF — malware analysis report

Static analysis result for SHA-256 80080131a08de49b…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 14:32:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: fd681f8ebc3eebddae2780f63a75ab3a SHA-1: ea8c3440f7d934b0319edb8d63c7f89044218032 SHA-256: 80080131a08de49b2850640e312471fc620f8b751f417f5a192c79b32d2c0231
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-human-verification-no-survey-game-hack PDF link annotation
    • https://perpustakaan.urindo.ac.id/repository/how-to-get-free-hair-on-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/gaming-cheats-com-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/roblox-base-raiders-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-robux-cards_GM431946152.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_off00002f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F49 22164 bytes
SHA-256: d716829ccbb7ff344f4bca91715583dcdef56d79cb132dc4842679d0fe5c4cfe
font_01_sfnt_off0000609d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609D 19628 bytes
SHA-256: 09331f1d479b06632facb78648812f66193fe8c97927eaaaed4247988ab7ba01

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