Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5b1728b70a6185…

MALICIOUS

PDF

42.4 KB Created: 2021-05-13 02:39:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b8ec3d2a9d7737c5cfe9f8a2e984ddc8 SHA-1: 90063049729c3b7640d59f1647ac0ded3d699f09 SHA-256: 6a5b1728b70a6185bf479d4ec37686113e0f53adabbac4de298352ba53c44b1a
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-coins-2021-coin-master-link-game-hack PDF link annotation
    • http://fengshui-shop.com.ua/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/robux-sites_GM431946152.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://fengshui-shop.com.ua/images/best-way-to-get-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a4d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4D 25016 bytes
SHA-256: d5044d4cae54e285f36cf12b989c61ffd8e9ea482fc22dd69b06e4b4a00d18be
font_01_sfnt_off0000832e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832E 18284 bytes
SHA-256: 44e7f09bb3e55560ed6b3e28d1dba29242186833d4e458deb15a61ccc134217c

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