Malicious PDF — malware analysis report

Static analysis result for SHA-256 8382a94c5a6d84d6…

MALICIOUS

PDF

33.9 KB Created: 2021-07-01 22:01:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0696c045fe9579df20a2287c841d4477 SHA-1: 1210720cdfb79ea0b87c84150a7525b13c9340c6 SHA-256: 8382a94c5a6d84d6583d0f25894c6395b1e4cb5c59eef79c1b9df8847537312f
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 0.9980

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/431946152/barren-roblox-hack-game-hack PDF link annotation
    • https://smark.com.tw/image/data/files/pokemon-go-free-event_GM1094591345.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-free-expoit-that-run-loadstring_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/shirt-roblox-girl-free_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-robux-games-that-actually-work-robu_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-robux-promo-codes-2021-list_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/booga-booga-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/promodes-free-roblox_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
font_00_sfnt_off00002f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F25 22264 bytes
SHA-256: 5f26a5c0a567edb5d1ca48936f9b0ad56112aae83cd152acce669e70e7a80d00
font_01_sfnt_off0000608c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608C 18656 bytes
SHA-256: b89447f6075df84245238091e6d8ed832acd982cc8508cb3c5c40db132ebf291

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