Malicious PDF — malware analysis report

Static analysis result for SHA-256 19528ed0b2146dcc…

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 10:11:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 870599f5fc966749b43b53687cc47bc5 SHA-1: 263036fe5902dc4d99425804a42c1cf3e63d17b0 SHA-256: 19528ed0b2146dcc3eec83437c5f33cbdedcf9f80eb117abb515df27ded3e2d4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, many of which are SEO-optimized pages offering cheats or in-game currency for popular games. The ML classifier strongly flagged this PDF as malicious, and the presence of a "download button" heuristic suggests a lure to download further content. The primary attack pattern involves tricking users into visiting these sites, likely to download malware or engage in phishing.

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/roblox-work-at-a-pizza-place-moneyz-cheat-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-free-someone-in-prison-life-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-money-cheat-no-survey_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-easy-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/como-hackear-vehicle-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-obby-link-in-description_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-free-generator-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-cheat-money-in-roblox-lumber-tycoon_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/admin-hack-roblox-espaol_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-100-robux_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_off00003027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3027 22136 bytes
SHA-256: a6bc5677bfa5d8ba1f50583c0e03acaf103710622f8d85a8d5da4d3c20c3fbf1
font_01_sfnt_off00006104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6104 19856 bytes
SHA-256: 62178a1180906044f0b79308baadee10aa83a3a7479b885f3c4b14206ac27343

Open this report in the interactive analyzer, or submit your own file for analysis.