Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8486e115404d8f6…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 19:51:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 34a52280855eb1617c3830a056268bf6 SHA-1: bc1dfc49e5b5d4358b990f98ce2a82af3946422f SHA-256: e8486e115404d8f634291c93230ba7dd230ea82393125e7b2ea0dd3c6758559f
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 0.9865

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/431946152/roblox-robux-generator-2021-game-hack PDF link annotation
    • http://www.rewaqousha.net/userfiles/files/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-800-robux_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/rbx-free_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/roblox-robux-codes-free-2021_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/www-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-mobile_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
font_00_sfnt_off000050cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50CF 24868 bytes
SHA-256: e81de2bec17689092129070c97282bcebb478bac10631c630e18da4062aebcb1
font_01_sfnt_off00008a29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A29 18660 bytes
SHA-256: 36c7fb5aa9c939457b824274e74d572de6a8f68b62037621f1b97da7e9e8e63e

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