Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8dc3610f499812f…

MALICIOUS

PDF

43.2 KB Created: 2020-08-29 20:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae8d22ab64cf8a2f9c1889e675760ac2 SHA-1: b4c805ebf7667d5044606c4313b840a8931a64a7 SHA-256: f8dc3610f499812f9d33b2dfcf4def203bcb246e88512f49a5c0acb4b1d1af85
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, disguised with a download-related keyword. It also features a large number of embedded links, many pointing to static.usrfiles.com, suggesting a link farm or SEO poisoning attempt to drive traffic to the malicious URL. The presence of a visual download button further supports the lure.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://ttraff.me/wix?keyword=pokemon+phoenix+rising+rom+download
    • https://static.usrfiles.com/ugd/b8c837_1ac2588746bb4780a6ce4ac01a4d7a9e.pdf
    • https://static.usrfiles.com/ugd/79e0dc_2022c222367340abaf81007420c4907d.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ebbf8250bd9413c8ee89fee0159f020.pdf
    • https://static.usrfiles.com/ugd/b8c837_67660d60ef52465fa2f1dc49f206c923.pdf
    • https://static.usrfiles.com/ugd/a382ee_0857968d7ec340ce95257ae8edca0756.pdf
    • https://static.usrfiles.com/ugd/b8c837_afe59185dfcb4e8d95f30066b694701f.pdf
    • https://static.usrfiles.com/ugd/b8c837_fff7a2b6cdc04b4a86919b16fa7089a6.pdf
    • https://static.usrfiles.com/ugd/b8c837_08cfc068c4024793bb29bb17f3ca2204.pdf
    • https://cdn.shopify.com/s/files/1/0437/3640/0037/files/jurutesowenumegaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/senepixukuwalaterig.pdf
    • https://cdn.shopify.com/s/files/1/0437/6251/6122/files/bol_chudiya_bol_kangna_free_video.pdf
    • https://cdn.shopify.com/s/files/1/0440/8541/1990/files/alcoholismo_y_drogadiccion.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/senepixukuwalaterig.pd

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069d4.bin
ef23baa4c61d01c49ae28535b99f2cef317eb3749bda3e49e198a575f1106abd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69D4 5600 bytes
font_01_sfnt_off00007cc3.bin
221221811d3ebcbb179e1359f56bcb2efc76c7ca737ecdb6305dfad0d2365c5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC3 10316 bytes

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