Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f4c497c90538d81…

MALICIOUS

PDF

48.4 KB Created: 2021-06-09 13:18:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 02f209d11c5116531394d0e6cda76294 SHA-1: 52399404c85d82dedc406ecab1908ae4060788ca SHA-256: 6f4c497c90538d81887bfd709baf0124350714f6781fdf1270563539041e572e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it is malicious and attempts to lure users with a "Roblox Speed Hack" theme, potentially for credential harvesting or to trick users into downloading further malware. The presence of embedded URLs suggests the document is designed to redirect users to malicious sites. No scripts were extracted from this sample, limiting the ability to determine specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

Heuristics 4

  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.tw/app/431946152/roblox-speed-hack-60-game-hack PDF link annotation
    • https://yeushuen.com.tw/image/data/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/gods-of-elements-roblox-hack_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/minecraft-items_GM479516143.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-roblox-mad-city_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/pokemon-go-free-coins-generator_GM1094591345.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_004_off00005449.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5449 29576 bytes
SHA-256: e51fda42c7dff95c8365d586869e91b0b0971ff451bab4718017898e01649210
font_01_sfnt_off000098f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98F7 18872 bytes
SHA-256: 0bf750718828d09245e79032f514daf439cab930b7d24feee8f4fc655169d134

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