Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd854e2669439373…

MALICIOUS

PDF

46.3 KB Created: 2021-06-03 06:05:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d014c19955935f5c730a46d01db8655e SHA-1: 4c3b562add4fd76e1b0d42ad1af0d86dc3c3d7bf SHA-256: fd854e2669439373d4ea9d4efe81dadde8c7fcbb58e74d62da51c6b7cfc273b2
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 0.9832

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/479516143/minecraft-cheats-pc-2021-game-hack PDF link annotation
    • http://perpus.polimarim.online/repository/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robux-codes_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-free-bundles_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_004_off000058cb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x58CB 25660 bytes
SHA-256: 7f79fcb004edf61ba5a308dc893d41a9b044402c5f327b6dfe289686abbf6010
font_01_sfnt_off000092de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92DE 18292 bytes
SHA-256: 2d037195ba652ec1c948f4cf72bc757aedb522eec45588ee568a5b79e45c6912

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