Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c75b75d00251c74…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 01:23:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: facb9227ae92b93607d6fd43afe8ee74 SHA-1: 906ebe0c554dbe4dfb82adf2838fe919aae8c3d9 SHA-256: 4c75b75d00251c74cd2a359c34db76b23273aaab5781918796d756ad42a626ce
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-real-game-hack PDF link annotation
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/cruise-ship-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/roblox-robux-hack-proof_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/tiktok-free-followers-hack_GM835599320.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/hack-roblox-2021-savanna-wild_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-2021-on-xbox_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-in-silver-in-treelands-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/roblox-com-free-codes_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/1-most-best-free-hack-executor-in-roblox-ever_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/roblox-how-to-get-free-shirts_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/coin-master-hack-spins-ios_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
font_00_sfnt_off000030a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A5 22088 bytes
SHA-256: bb60a25c52b1648bcbeec2e900e082ed3487a305a1dc5fa26d38435310680509
font_01_sfnt_off000061cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CD 18788 bytes
SHA-256: 4bc1fb5241f7d1727492069c2276e888dd2add0fc79522b75a602c51baadbe08

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