Malicious PDF — malware analysis report

Static analysis result for SHA-256 7312880b7e31d3ec…

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 11:13:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7854dfa272c9d147b12cb067133805ef SHA-1: 28002a61e6cae8c0302cb5c82aaa0037f929a265 SHA-256: 7312880b7e31d3ec3f1c14bcb9bfcb8f455fbc60b6d4bde25b354e1c0d110075
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 0.9971

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.xyz/app/406889139/free-spins-coin-master-hack-game-hack PDF link annotation
    • http://radiobuku.com/ipoestaka/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/robux-only_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/coin-master-spin-link-today-free_GM406889139.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_off00004a28.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A28 24800 bytes
SHA-256: 4125d4322f0f8b5e5209726883475ad34d74c40e78d564dddb9d9c576e6c302f
font_01_sfnt_off000081fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81FC 18056 bytes
SHA-256: 80aa601e39d75fb74aea55068656967f8eb3655b97589a2d3c4253cef7ecc220

Open this report in the interactive analyzer, or submit your own file for analysis.