Malicious PDF — malware analysis report

Static analysis result for SHA-256 875ace67ad4e3ed6…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 01:17:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 944272e7c679c9b5a124dd6a5ee74180 SHA-1: 29a7c3fa9c6827e08822b18340fae75d2e2b793a SHA-256: 875ace67ad4e3ed6a988e4e12d3cdddb1c69bcf752eb61921c54f3beffb19755
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are structured as SEO-optimized links pointing to game-related hacks and cheats. The ML classifier and PDF link farm heuristics strongly indicate malicious intent. The document body itself contains a title related to hacking Roblox and includes several of the extracted URLs, reinforcing the lure for users seeking unauthorized game advantages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/hack-roblox-comment-passer-a-travers-des-murs-game-hack
    • http://www.vista-design.hr/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdf
    • https://www.vista-design.hr/files/free-robux-without-downloading-apps_GM431946152.pdf
    • https://www.vista-design.hr/files/roblox-full-version-free-download-apk_GM431946152.pdf
    • https://www.vista-design.hr/files/bloxland-earn-free-robux_GM431946152.pdf
    • https://www.vista-design.hr/files/coin-master-free-gold-cards_GM406889139.pdf
    • http://www.vista-design.hr/files/buy-tiktok-followers-free_GM835599320.pdf
    • https://www.vista-design.hr/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdf
    • http://www.vista-design.hr/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdf
    • https://www.vista-design.hr/files/hacks-para-roblox-2021-booga-booga_GM431946152.pdf
    • http://www.vista-design.hr/files/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • https://www.vista-design.hr/files/coin-master-free-link-spin_GM406889139.pdf
    • https://www.vista-design.hr/files/roblox-free-roming-camera_GM431946152.pdf
    • http://www.vista-design.hr/files/free-coin-spin_GM406889139.pdf
    • https://www.vista-design.hr/files/coin-master-email-rewards_GM406889139.pdf
    • https://www.vista-design.hr/files/earn-free-spins-coin-master_GM406889139.pdf
    • https://www.vista-design.hr/files/roblox-online-hack-free-robux_GM431946152.pdf
    • https://www.vista-design.hr/files/best-free-minecraft-server-hosting-reddit_GM479516143.pdf
    • https://www.vista-design.hr/files/minecraft-server-free-trial_GM479516143.pdf
    • https://www.vista-design.hr/files/free-coin-and-spin-in-coin-master_GM406889139.pdf
    • https://www.vista-design.hr/files/free-roblox-accounts_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000030ad.bin
ea0d6fa331e4d301f3accf7b2d51f155099c754e209feae573bf58812fe30dcd
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30AD 22680 bytes
font_01_sfnt_off00006315.bin
30b2ff662737eb65bf225740cd23bc286c25e2a050b12193cba38725ebd1acc1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6315 19792 bytes