Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b3cecd882030dc…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 22:43:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c3056b70aac810b69f8498f7cc3a8008 SHA-1: c2b43ce384cf603664440f404532ef25ea7db6ce SHA-256: f0b3cecd882030dcbcd5f6e66094cfbe54b23212aebd3c27502d232e0c2e26cc
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/406889139/coin-master-free-100-spin-game-hack PDF link annotation
    • http://kumotor.com.tw/upload/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/the-easiest-way-to-get-free-robuxgrayphiny_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/flame-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/how-to-get-free-robux-legit-no-survey_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/cool-roblox-costumes-free_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/wurst-112_GM479516143.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/free-tix-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/real-robux_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/free-sprite-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/artmoney-pro-roblox-free_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_off00002ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF5 23004 bytes
SHA-256: 0986754a90a59e12d3a1a4060b83cc9d67b822eac2488a4e210753336ce232f7
font_01_sfnt_off00006393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6393 18452 bytes
SHA-256: 37e214ca0c10569631737ea76d0b286c06f7f090ccf5ba3adb7f37b061e81cee

Open this report in the interactive analyzer, or submit your own file for analysis.