Malicious PDF — malware analysis report

Static analysis result for SHA-256 542ec4396fecab38…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 14:21:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3b4f814c9de1649d161f20dce7256feb SHA-1: dfdbab9715b224c98f8f4e50431007c7aeaf44cc SHA-256: 542ec4396fecab38c0ecff3638a48821e4b37184422f82299e4dd25223d04e88
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/roblox-hacked-version-game-hack PDF link annotation
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-free-robux-card_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-money-hack-adopt-me_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/bypass-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-weight-lifting-simulator-2-strength-hack_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-free-hoodie-template_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/dimonds-hack-roblox_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-bandit-simulator-hack_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-catalog-stuff-roblox_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/every-free-item-roblox_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/latest-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-youthnow_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_off00002f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9F 21440 bytes
SHA-256: 9d67438ad6ced23c89723d9d2f32744498b8c4fd78b043b8059974fe59a61d79
font_01_sfnt_off00005e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E73 19084 bytes
SHA-256: e30baab197ea380a830251f11993b0159206347d5302a55b978f6309ced101e7

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