Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d42a52750ee2e6…

MALICIOUS

PDF

34.6 KB Created: 2021-06-24 03:48:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4f34c78d107d90be090469cf72a61cfe SHA-1: 0b996aae653869ad0089549d7a81c66e3b858418 SHA-256: c2d42a52750ee2e652aeddd4f1d2583ba5711d1c643805cce9c4352b186a2d5d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, specifically advertising game hacks and free currency generators for popular games like Coin Master and Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this is a lure to redirect users to potentially malicious sites. While no scripts were extracted, the embedded URLs are the primary indicators of malicious intent, likely leading to phishing or malware download pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/406889139/coin-master-free-coins-link-blogspot-game-hack PDF link annotation
    • https://iear.com.tw/image/data/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/roblox-royale-high-cheats_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/ultimate-roblox-hacking-robux-website_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/roblox-free-hats_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://iear.com.tw/image/data/files/free-spins-coin-master-2021_GM406889139.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
font_00_sfnt_off0000307f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307F 22732 bytes
SHA-256: 63da26409945a74fde58ade02ac298b7709d9069a58745732f66acaa52c07004
font_01_sfnt_off0000638d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638D 18632 bytes
SHA-256: d0d574b1662071f3403a16b1a6302b8c72ae4679adcfbefd57853cfc863fd1c5

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