Malicious PDF — malware analysis report

Static analysis result for SHA-256 16f4a94ff32695c5…

MALICIOUS

PDF

33.8 KB Created: 2021-06-25 11:18:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4ed093653880958ba9403ed8859293f1 SHA-1: 8c0dd022afc52e3f5f8c78a0065ad47daef70691 SHA-256: 16f4a94ff32695c5813623cfc1b77b4f747bc46f7f07594e2c4c0123d72fae52
102 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are designed to appear as download pages for game-related cheats and currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a coordinated effort to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is part of a scam or malware distribution scheme.

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/robux-hack-download-google-chrome-game-hack PDF link annotation
    • http://ansacare.com/images/how-do-i-get-the-free-robux_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/roblox-free-font_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/how-to-get-free-robux-without-getting-scammed_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://ansacare.com/images/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/roblox-prison-life-exploits-free-easy_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/free-robux-no-human-verification-2021_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_off00002cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD6 21920 bytes
SHA-256: 3fa8852371defe85bec3e6db90963231bbfbaba47bc86dbe8680d985bee1417b
font_01_sfnt_off00005d15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D15 19728 bytes
SHA-256: 4d4b628ce9891576a59df2813f89d19c3eebdea6ab969af3ec143d8ffa43d39f

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