Malicious PDF — malware analysis report

Static analysis result for SHA-256 7367cc82cc5c0196…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 08:49:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0eed7df0de8c8c3f0febd1a454c5aeb1 SHA-1: ab57959587ebcf37dcf70fff8289eea15ddd54cb SHA-256: 7367cc82cc5c0196188e4c5a21f1dbce26fa4d6936904fb06444b05aa25dea2c
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/how-to-get-robux-easy-game-hack PDF link annotation
    • http://lib.uho.ac.id/library//repository/pokemon-go-free-7k-eggs_GM1094591345.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-free-robux-no-survey-no-save-no-subscription_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-tiktok-followers-quick_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/give-me-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/are-tiktok-free-views-hack_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/robux-rewards_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_off00002f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3A 22588 bytes
SHA-256: 104b9562772b3d0e071e86056b718d174c6bbefba549528db02c5fc5091bb58e
font_01_sfnt_off000061f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F4 19000 bytes
SHA-256: 9c8ff038a449ab176a5e1d1aada010ae8dcfba4f01e2557d9a848b5c6737e1f5

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