Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cfb7b9c8000d3c8…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 13:06:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4aa76274709f2ba75631fa412700d112 SHA-1: 95448389b40d8b2fccea19f898f512fb33f7ba83 SHA-256: 3cfb7b9c8000d3c8222a6e58529f5c832b482fce96b340901796d8f66c2c740a
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-download-game-hack PDF link annotation
    • http://library-fkip.uho.ac.id/repository/roblox-galaxy-money-hack_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-hack-script-infinite-health_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-wings-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/real-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/ulgamesresources-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/sonydeveloper-hacking-on-roblox_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/zombie-attack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/pokemon-go-free-quagsire_GM1094591345.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/real-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/get-free-robux-2021_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_off00002fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA4 22276 bytes
SHA-256: 54cdad6dbf33d1f13d242341def3351db1ea2e54d2c81b13fe8fe1847a4d8d7b
font_01_sfnt_off00006134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6134 19296 bytes
SHA-256: 673f58843918fec7fc82dc93eb19a7c859fa60c1e628ed96b3248d818383844d

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