Malicious PDF — malware analysis report

Static analysis result for SHA-256 3372404966f287fa…

MALICIOUS

PDF

44.6 KB Created: 2021-05-15 12:13:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 386be138b334bdb1c89bd057dacdf990 SHA-1: 61dbae4faec47eb79b4b2d7e466fbb1f1dacf93e SHA-256: 3372404966f287fac906493c1d09de785bd837ae9210ed1e8b205adcf1ba979e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document exhibits malicious behavior by attempting to lure users with game-related "hacks" and "free spins" to download further content or reveal sensitive information. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to malware download or credential harvesting. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/431946152/how-to-exploit-roblox-game-hack
    • http://pianoservice.com.ua/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://pianoservice.com.ua/images/how-to-get-free-robux-as-a-kid_GM431946152.pdf
    • http://pianoservice.com.ua/images/free-draw-roblox_GM431946152.pdf
    • http://pianoservice.com.ua/images/coin-master-free-spins-hack_GM406889139.pdf
    • http://pianoservice.com.ua/images/best-free-minecraft-skins_GM479516143.pdf
    • http://pianoservice.com.ua/images/coin-master-hack-review_GM406889139.pdf
    • http://pianoservice.com.ua/images/op-rewards-free-robux_GM431946152.pdf
    • http://pianoservice.com.ua/images/free-spins-promo-code-for-coin-master_GM406889139.pdf
    • http://pianoservice.com.ua/images/roblox-hack-download_GM431946152.pdf
    • http://pianoservice.com.ua/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdf
    • http://pianoservice.com.ua/images/free-minecraft-skin-creator_GM479516143.pdf
    • http://pianoservice.com.ua/images/free-gold-cards-in-coin-master_GM406889139.pdf
    • http://pianoservice.com.ua/images/minecraft-pe_GM479516143.pdf
    • http://pianoservice.com.ua/images/hacked-roblox-game_GM431946152.pdf
    • http://pianoservice.com.ua/images/free-robux-no-verification-no-download-2021_GM431946152.pdf
    • http://pianoservice.com.ua/images/coin-master-free-spins-daily-1-ga_GM406889139.pdf
    • http://pianoservice.com.ua/images/free-pe_GM479516143.pdf
    • http://pianoservice.com.ua/images/free-robux-working_GM431946152.pdf
    • http://pianoservice.com.ua/images/coin-master-free-spins-link-2021-blogger_GM406889139.pdf
    • http://pianoservice.com.ua/images/free-roblox-groups_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004976.bin
7a8ee69938e11e8ef6962e8b01ea717b246aebad02f631a6f4afa5fd454d9383
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4976 28860 bytes
font_01_sfnt_off00008b9f.bin
14a7a02fb1aaf1beab455532f44b65ebc20e678385b0b150c909edd11662d31d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B9F 18348 bytes