Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe98a91f2d95eae…

MALICIOUS

PDF

46.4 KB Created: 2020-08-15 00:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6737309787d1aaf9081cc4f260c32405 SHA-1: fea6cbfb98698df5051d302a34510f0b0f14d0c7 SHA-256: ffe98a91f2d95eaeb34db9476d4dad3ffc77a1f37d799b2173f2cfca2027c865
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Cervical spondylosis physical therapy pdf' and a URL that aligns with the malicious redirector heuristic. This suggests a phishing or scam attempt to redirect users to a harmful site.

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.ru/wb?keyword=cervical%20spondylosis%20physical%20therapy%20pdf
    • http://files.cockburnarchitecture.co.uk/uploads/1/3/1/0/131070581/6307191.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/samogikaniludewevawosun.pdf
    • https://cdn.shopify.com/s/files/1/0431/9857/8848/files/33407778537.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0486/files/35287309819.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/gonejewukexidibozota.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/8468277861.pdf
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/38133875706.pdf
    • https://cdn.shopify.com/s/files/1/0435/8687/9651/files/20601567883.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/the_twelve_kingdoms_anime.pdf
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/69519539636.pdf
    • https://cdn.shopify.com/s/files/1/0434/6239/4021/files/49145473123.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/1/0433/6680/97

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ad0.bin
6e78fff36581b95664aa88128d6681a1ef59616c1f5fbfb352e8c2f7f6c9144a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD0 5216 bytes
font_01_sfnt_off00007c85.bin
1b07bcd1bdbec4c6d1c378b205d87d03b1a2425bf9bb01f618bcc2c62415f1f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C85 9956 bytes
font_02_sfnt_off00009e5a.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E5A 4324 bytes

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