Malicious PDF — malware analysis report

Static analysis result for SHA-256 e070f124971df4cd…

MALICIOUS

PDF

44.1 KB Created: 2021-06-13 19:42:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cf6918fa10d79cf99192800b85bb70cb SHA-1: 30061408bbf14c741093fd1597fe08588dacb353 SHA-256: e070f124971df4cd171852bafdcf0b1c1825aff3edcea480470037abf2b9847c
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 0.9969

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.co/app/431946152/roblox-bee-swarm-simulator-hack-script-game-hack PDF link annotation
    • http://perpustakaan.uf.ac.id/opac/repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/how-to-get-a-dominus-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://perpustakaan.uf.ac.id/opac/repository/free-robux-real_GM431946152.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
stream_003_off00004b99.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B99 26128 bytes
SHA-256: e29597e2ec37ec2b7e0d79ba3f89f62d4c04f2610442444668a6cbe534804ad1
font_01_sfnt_off00008772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8772 19148 bytes
SHA-256: 738f04a5eabf5a1bcd0a7f47a070efdd0655743b7c3ee241561f96211c6c5846

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