Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc62406eff48821a…

MALICIOUS

PDF

44.5 KB Created: 2021-05-14 23:05:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: bd7d2c7a620e8e9f2ef1b868ef0aa6b8 SHA-1: 98084df659d826a4ffcf2e28380163a6f95d73f4 SHA-256: bc62406eff48821ab7e7ccdb5ca2957726df037ef9eb6ea394d53918a7a15b47
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and a link farm, all pointing to sites offering game hacks and cheats. The ML classifier strongly indicates maliciousness, and the presence of external URIs suggests the document is designed to redirect users to potentially malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a lure for malware or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/coin-master-fun-hack-online-game-hack PDF link annotation
    • http://salon-vyshyvanka.com/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/get-robux-today_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/robux-apk_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/rbx-com_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://salon-vyshyvanka.com/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048b3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B3 25564 bytes
SHA-256: 9867bda52249265f934859a14cf115cfb7be9b240133fe17ac015a50b1d1b6a6
font_01_sfnt_off0000827e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827E 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C30 18092 bytes
SHA-256: cb92e27069aef3c0bc648d9f638bf08ddfa79cec59b13d8f3523a3f3131ac35f

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