Malicious PDF — malware analysis report

Static analysis result for SHA-256 23e0ac4c33395d1a…

MALICIOUS

PDF

34.1 KB Created: 2020-08-21 07:25:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4de6bbed6a32618c2489fb28a55ee863 SHA-1: 4eabfe26522cfd421e9c971e47d1b8e37229d732 SHA-256: 23e0ac4c33395d1a7c77eafee32ef060f40762a2a01900e2e80e30d398fe4977
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=anywhere+you+go+song'. The document body, though heavily obfuscated, contains the same URL and a reference to a song title, likely serving as a lure. The primary intent appears to be directing users to malicious infrastructure through a deceptive link farm.

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.cc/pify?keyword=anywhere+you+go+song
    • http://files.nidinidi.ca/uploads/1/3/2/3/132302987/1e4285add.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/48352474188.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/bamozaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/aerodynamic_design_of_transport_aircraft.pdf
    • https://cdn.shopify.com/s/files/1/0432/7679/6057/files/66666671471.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/bazaar_apk_7._11_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/wodexixap.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2552/files/8925618139.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/lunune.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/kisulajetonik.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000488c.bin
1726f4e2bf6c96a1204bfd4efe1da097c307787f6f9869942b71ee9fff270670		 pdf-font-stream PDF embedded font (sfnt) at offset 0x488C 4888 bytes
font_01_sfnt_off0000593f.bin
4caa19d1c170dae4de43d43b0a357ee7dc527074075a003b010de3dcbda9489b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x593F 10260 bytes

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