Malicious PDF — malware analysis report

Static analysis result for SHA-256 564441bda4d8a57e…

MALICIOUS

PDF

49.7 KB Created: 2020-07-29 04:23:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70a17d175ad0ff3c258775a1128d9534 SHA-1: d83d4f4051d5a462ac60b6a00f5fa9cb76a2b8f5 SHA-256: 564441bda4d8a57e7a883b68e17f06070faf4f72a61dc5b80d3677fcd8121357
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct attempt to lead the user to harmful content. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests a mass generation of links, likely to manipulate search engine results or distribute malware through seemingly legitimate platforms like Shopify. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, but no clear textual lure is present.

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=bogitora+2006+songs
    • http://files.deeperhealingministries.org/uploads/1/3/0/8/130814597/zomuxojeni.pdf
    • http://files.autismbuddies.org/uploads/1/3/0/9/130969327/rebowujumux-dexufedat-medopivisa-bogom.pdf
    • http://files.vomhiddencreek.com/uploads/1/3/1/6/131606127/kukuko.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/lanosanomesutajosasowe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/8894025332.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/40493761369.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/kasonomizo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4184/8470/files/kafiwovawafowapi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0955/5107/files/lesuluzeg.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/56787127621.pdf
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/xogogodorasekukove.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7308/files/77999284663.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/56148131464.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/dalutaj.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_off00006f13.bin
cb0c5e3bd3147d0befd8100096355d8e332037d8d9b12314b49011a289b18f03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F13 4968 bytes
font_01_sfnt_off00007fed.bin
ad27773d36e3f6a59d48f63e3957ed04c134581618547e61c8763afbfe093812		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FED 4436 bytes
font_02_sfnt_off00008e31.bin
1927436948f81728c0c20830c971fd5c203e419d01568994e5d37f9e4f1c507b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E31 13488 bytes

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