Malicious PDF — malware analysis report

Static analysis result for SHA-256 82ce709d9b107d5f…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 03:28:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 32d700106c7de7b8387a19bd16569427 SHA-1: d30902a2ee46152b33209125b059fd753ddf9f2f SHA-256: 82ce709d9b107d5f6e856bd75637fdad8a7b8dcaacb20f73ec5ffa891978f75c
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-800-robux-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7/repository/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/glitch-things-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-roblox-money-cheat-download_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/script-for-robux-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-rs-obc-tbc-bc-gain-95-2021-free-robuxs_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-free-give-account-codes_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/supreme-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-lego-hacking-download_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-online-dater-clothes-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-csgo-cases-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/script-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/unsopported-smoke-flight-roblox-free-copy_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hack-dinero-infinito-westrover-island-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hacker-bubble-gum-simulator-de-roblox-fr_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-get-minecraft-for-free-on-computer_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
font_00_sfnt_off0000309a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309A 21360 bytes
SHA-256: e8de7fa3ae11772a0ab1870a8a3939630992c7cfec1f307a51cbd09ba1d7b1ae
font_01_sfnt_off00005f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F64 19100 bytes
SHA-256: 0ebfa7702a782f6f4faf41f8567968345b55cc7a7d3e2a6dc37d1edcf849371e

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