Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d1be885296566e…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 22:14:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d8ac7d1739fe8b5c061fcc86ef13f4ab SHA-1: 51ca54bd49da5784fa78156a367f7e59532d22f4 SHA-256: c8d1be885296566ea5fa2f9734d2f630ada9ba0334cb2a2e1a2bdb591f427aec
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/835599320/tiktok-free-view-easy-verification-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/daily-spin_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-script-executor-level-7-free-download_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/cheat-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/app-hack-online-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/2021-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/como-hackear-una-cuenta-de-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/my-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-decals-for-roblox-work-at-a-pizza-place_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-a-builders-club-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-with-inspect-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-coins-and-spins-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_off000031af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31AF 22184 bytes
SHA-256: 2b843b6d3cc81619b8d2d4f215480d6aec2942df54f276416c1ddf566752e6ef
font_01_sfnt_off000062fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FA 18452 bytes
SHA-256: 54f8dd08ccec1cfa51ae32216d28f5b081bea57fab8f74b5dbaca7c54f8a591a

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