Malicious PDF — malware analysis report

Static analysis result for SHA-256 395c78b6955deb02…

MALICIOUS

PDF

47.6 KB Created: 2021-06-03 11:20:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 484aadb7363ca4423051db0053ff4964 SHA-1: 4025c0814fa46ca6109974bcd59b6a7674b36891 SHA-256: 395c78b6955deb02c434a1c27ae14be28d82c75f3e38b17808a70b55ed1536f0
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 0.9769

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/haktuts-coin-master-free-spin-link-today-game-hack PDF link annotation
    • https://perpustakaan.stieppi.ac.id/repository/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/rape-simulator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/no-scam-free-robux_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000503a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x503A 26416 bytes
SHA-256: 4617b0511095a88af7218aa39d28a2f1e1c7d0fcdce51d3152e068d99e98326d
font_01_sfnt_off00008b6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B6F 3400 bytes
SHA-256: 75c3a8e6f5c68e0746f893c922e57fd7e888a21fb038f9ae3eedb0a197a59e24
font_02_sfnt_off00009693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9693 18548 bytes
SHA-256: 8a183f727996cc32fbef5b88310e24e7f03bcbd52bbb5fb8fb881fa2948b6bea

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