Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ad707107020c0b…

MALICIOUS

PDF

34.2 KB Created: 2021-06-25 16:03:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7539898b2e8bf8deecb422f7f80e620c SHA-1: fa190c2fcb0911edf59732a7486197b6daba0b1d SHA-256: e0ad707107020c0bddd5ff7c7f9e253e38a32d9c54c6e297afeb2750f925f6c1
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/roblox-free-ss-excutor-game-hack PDF link annotation
    • https://cosmosocean.com.tw/upload/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-free-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-on-roblox-without-human-verification_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-accs-free_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-make-yourself-look-like-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/coin-master-club-hack_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-coin-codes-for-roblox-bubble-gum-simulator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CA 21900 bytes
SHA-256: 6b7f0c5cf57182198c46b24f3124731023fe59f78f3e04b0f26611e15e1d7956
font_01_sfnt_off0000610c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610C 18896 bytes
SHA-256: bf9091c3c13e3ab0fe3333d97f9e488e70a1eb27b9961b9d88f386e67e2c1423