Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c38e7f960a5c643…

MALICIOUS

PDF

44.0 KB Created: 2020-07-25 08:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 898404d1ab891113b820bfbb53c593f9 SHA-1: fe75805d064a22be0b8c12acbd90ec991b1bbabf SHA-256: 7c38e7f960a5c643ae4e791700c4d9b2b66787fcceb3d5cfed731ea5554909b0
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm', directing users to various external URLs. One of these URLs, 'https://ttraff.ru/pify?keyword=guide+randonn%25C3%25A9e+lot+et+garonne', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Guide randonnée lot et garonne', suggesting a lure to disguise the malicious link farm. No scripts were extracted from this sample.

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/pify?keyword=guide+randonn%25C3%25A9e+lot+et+garonne
    • http://files.northwestpermaculture.org/uploads/1/3/0/8/130873943/zexewije.pdf
    • http://files.novalitchicks.com/uploads/1/3/2/6/132695602/sixagowatij-wosemoxed.pdf
    • http://files.shakespearefreelibrary.com/uploads/1/3/1/4/131438260/vuvoli.pdf
    • http://files.fblbasketball.com/uploads/1/3/0/9/130969751/6863077.pdf
    • http://files.healfromthecore.com/uploads/1/3/1/8/131857419/5309635.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/9408250542.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/maxutomitonopaxavideb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdf
    • https://cdn.shopify.com/s/files/1/0428/9724/4316/files/64495697465.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/59224339871.pdf
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/lazafavumobejafetar.pdf
    • https://cdn.shopify.com/s/files/1/0438/9352/2587/files/78895482640.pdf
    • https://cdn.shopify.com/s/files/1/0432/7938/4734/files/7216907126.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/2137476056.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/zewagoxavadigewap.pdf
    • https://cdn.shopify.com/s/files/1/0431/4470/8245/files/39631722434.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1044/files/kufozujedukesebi.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_off00006a38.bin
1ad8a861ac911c5af0e87d56280d1e55bb5a6cf62d1b5fb14b70efb364775d76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A38 4868 bytes
font_01_sfnt_off00007a88.bin
20248b53eb89765fbdbdfe1cf5667c19ac3a132f553d09f40ed7867bfd1f7778		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A88 12252 bytes

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