Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad3e0b4c764c3b8d…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 16:56:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 60501d05285972444a178a97872fd412 SHA-1: 29ab0a311363ce1f486fa43ace8563ccd5349c06 SHA-256: ad3e0b4c764c3b8dbe5b92f476231308c0d5f6e5480d9807431e0a66ca32eff7
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 0.9865

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.online/app/406889139/coin-master-game-hunter-game-hack PDF link annotation
    • http://rkh.go.th/ckfinder/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/ww-robux_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/minecraft-client_GM479516143.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/pokemon-go-free-codes_GM1094591345.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/freerobux-co_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ff9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FF9 24640 bytes
SHA-256: 71190be6f224bab741f6f425dfb96fe63e8bee25f0cab797bb4d573c8397a70a
font_01_sfnt_off00008882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8882 17944 bytes
SHA-256: e9797648e833dbfa666635f32d7367ca0739e8c750ac532ad8234daf7d16a172

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