Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca76e0ab67badbc2…

MALICIOUS

PDF

41.8 KB Created: 2021-05-11 23:38:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8248816cc805a761effebaf0c26942ce SHA-1: 359d8a503f2bc8b59007fe05ae50f2e14d669e0a SHA-256: ca76e0ab67badbc2153a537210bb3ac9802afae9aa24cf4808d010f0ad30d704
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 0.9971

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 https://netcdn.xyz/app/406889139/free-spins-for-coin-master-game-game-hack PDF link annotation
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/oginject-co_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.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
stream_003_off00004b73.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B73 23724 bytes
SHA-256: eb85e36bef8c42c44f134d301813f420d00357fa9433a1be938e99f5f706ed7c
font_01_sfnt_off0000816f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x816F 18148 bytes
SHA-256: 3d9eadf91671033e4331a310c0b0805123b3ad5df85bc8ef5d318b7854ffa5cb

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