Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0293721dce3c066…

MALICIOUS

PDF

55.6 KB Created: 2020-08-29 19:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54a0ef14a61d953886f490c92ff3cdb3 SHA-1: 4509e64437b421b5f47d28f0de24eb58724b2a2f SHA-256: b0293721dce3c066d067128f4841ab353cd1e064d68821c1ba9632fb01f4daaa
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is also present in the document body. Additionally, a PDF link farm heuristic indicates the presence of numerous external links, many hosted on 'static.usrfiles.com'. The document body, though partially corrupted, contains the URL 'https://ttraff.com/wix?keyword=universite+paris+1+pantheon+sorbonne', suggesting a lure related to a university. The combination of these factors strongly indicates a phishing or malware distribution attempt.

Heuristics 3

  • 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.
  • 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.com/wix?keyword=universite+paris+1+pantheon+sorbonne
    • https://static.usrfiles.com/ugd/b8c837_752b1aaa1f574dcb93a3fbfb7c4d109f.pdf
    • https://static.usrfiles.com/ugd/b8c837_808dcbcd55bd42d580d2a6857c57554a.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c9ac6d87a2b44e1a8b8648094a9387c.pdf
    • https://static.usrfiles.com/ugd/b8c837_11aa4c9333a142c0af0c7741f0e27970.pdf
    • https://static.usrfiles.com/ugd/b8c837_4bddd9dbab824720ad073600196511af.pdf
    • https://static.usrfiles.com/ugd/b8c837_1902b7e3d2804492a3faf56f5da7441f.pdf
    • https://static.usrfiles.com/ugd/b8c837_304c82db875343c7814cc21b1dfc30bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4044b3ca3bf4b26aba5879b3d10153b.pdf
    • https://static.usrfiles.com/ugd/b8c837_9ea3d980ff6543108276bffef1ef21bd.pdf
    • https://static.usrfiles.com/ugd/b8c837_462d9dc08201408b9c21468378a80ddd.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa8cf9795c584fa1aabfd951385e264b.pdf
    • https://cdn.shopify.com/s/files/1/0451/3264/4505/files/amazing_grace_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/81480384870.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000901c.bin
6c24d0b4471148fd3f1c6207ca31e72f9ec2713b3bf32bc874d9f9538c17975d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x901C 4908 bytes
font_01_sfnt_off0000a0bd.bin
a0ab52a7e9eb29d8852b3c5d4b05c35fb3618a2271636061b0a9b672a567d6fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BD 10080 bytes
font_02_sfnt_off0000c2f3.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F3 4324 bytes

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