Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d2a7c7df749374f…

MALICIOUS

PDF

41.9 KB Created: 2021-05-16 10:37:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2c9ecb6474ddfd516066ae2e49a4fc0c SHA-1: 283d5358111c14b7372164ec60c7d67d0f744233 SHA-256: 8d2a7c7df749374f8b640e3cb240973e9c7c56411618308256085afb7b55004f
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/coin-master-hoe-to-get-extra-free-spins-game-hack PDF link annotation
    • https://tnupacktour.com.tw/image/data/files/master-coins-free_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/roblox-free-skin_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/master-coin-free_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/wurst-112_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-download-minecraft-for-free-on-mac_GM479516143.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_off00004b94.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B94 24032 bytes
SHA-256: 6c9b1fb04fabe69ccc66887596e2c084ec7cda18828cc7fb760d12b2f6a69057
font_01_sfnt_off00008221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8221 18096 bytes
SHA-256: a4a803d9d05bebfc1a8c6d99dcbd6f2321fcd0a5c63e0d4336c3724b9a4a35e0

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