Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fe7817d770c8703…

MALICIOUS

PDF

48.5 KB Created: 2021-05-19 07:30:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f2f80dcc2a8d13290d9f1f3b487713bd SHA-1: 2258854b4865ff010fc242784cd2905d2d6fc818 SHA-256: 6fe7817d770c8703ac562903ddd29e11e3c6c8a440142fbb6fb1f41724602c93
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF gateways for game hacks and 'free Robux'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to redirect users to potentially harmful content or phishing sites. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-human-verification-game-hack
    • http://behsanroshd.com/images/minecraft-112-hacked-client_GM479516143.pdf
    • http://behsanroshd.com/images/http-bit-ly-coin-master-hack_GM406889139.pdf
    • http://behsanroshd.com/images/free-spin-link-for-coin-master-game_GM406889139.pdf
    • http://behsanroshd.com/images/coin-master-free-spins-link-hack_GM406889139.pdf
    • http://behsanroshd.com/images/coin-master-free-spins-and-coins-for-today_GM406889139.pdf
    • http://behsanroshd.com/images/coin-master-gold-cards-hack-english_GM406889139.pdf
    • http://behsanroshd.com/images/minecraft-free-no-download_GM479516143.pdf
    • http://behsanroshd.com/images/free-robux-no-verification-2021_GM431946152.pdf
    • http://behsanroshd.com/images/free-online-games-like-minecraft_GM479516143.pdf
    • http://behsanroshd.com/images/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://behsanroshd.com/images/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdf
    • http://behsanroshd.com/images/roblox-fun-com-free-robux_GM431946152.pdf
    • http://behsanroshd.com/images/free-minecraft-java-account_GM479516143.pdf
    • http://behsanroshd.com/images/toolbox-premium-apk_GM479516143.pdf
    • http://behsanroshd.com/images/how-to-get-robux-fast_GM431946152.pdf
    • http://behsanroshd.com/images/pubg-uc-buy-free_GM1330123889.pdf
    • http://behsanroshd.com/images/coin-master-hack-online-android_GM406889139.pdf
    • http://behsanroshd.com/images/get-free-spins-for-coin-master_GM406889139.pdf
    • http://behsanroshd.com/images/coin-master-hack-app-ios_GM406889139.pdf
    • http://behsanroshd.com/images/robloxbux-us-generator_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a2b.bin
b78957c510dfd6545ca5f92e4b4ae88b8c9df22216710ae52554ce6235700679
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A2B 30576 bytes
font_01_sfnt_off00008e86.bin
94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E86 2824 bytes
font_02_sfnt_off00009834.bin
c7994a70f951e7a274445218605a0e5dad46067da7d3a89c75279f94e76bcfde
pdf-font-stream PDF embedded font (sfnt) at offset 0x9834 19388 bytes