Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9120227538c9aa4…

MALICIOUS

PDF

40.6 KB Created: 2020-08-11 17:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dce5cc2ee1e82f07ab4490470ebcf26d SHA-1: 7c7af0b0eeab83ada418c03451d8c8fbb2b0beac SHA-256: f9120227538c9aa453a4bbf8dc6ac1d5d89aec6c268f6705271041beeabfb974
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=soda+pdf+to+ppt'. This indicates the document is designed to lure users to a malicious site. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the idea that the document attempts to trick users into clicking a link, likely for malicious purposes. The document body contains multiple embedded URLs, including the primary malicious redirector and numerous benign Shopify links, suggesting a link farm strategy to obscure the malicious destination.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=soda+pdf+to+ppt
    • http://kiteto.aviatorsbasketballclub.com/uploads/1/3/0/8/130814328/11877f03587f170.pdf
    • http://molusi.johngreinerferrismedia.com/uploads/1/3/0/7/130776485/c41fe5263fe05.pdf
    • http://xetige.westwoodfive.com/uploads/1/3/2/3/132302815/lexalij_jogiguvoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/57791400610.pdf
    • https://cdn.shopify.com/s/files/1/0432/6395/1003/files/aolmail_simple_free_fun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/berujixawajibexuxutuzogar.pdf
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/vafofufidi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/17108211551.pdf
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/2529681786.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4549/files/savokenufopur.pdf
    • https://cdn.shopify.com/s/files/1/0433/3849/8198/files/kituwajelifozebeb.pdf
    • https://cdn.shopify.com/s/files/1/0437/1657/5383/files/akoya_oxygen_master_plan.pdf
    • https://cdn.shopify.com/s/files/1/0436/0614/7230/files/automorphism_of_groups.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/67442580488.pdf
    • https://cdn.shopify.com/s/files/1/0437/9282/6517/files/dogawovufamixenixevope.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_off000063a8.bin
2c3939da25a5b8a530abbf6f5c25b096b68a40f033aae26f169646ff6002d3ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A8 4832 bytes
font_01_sfnt_off0000742d.bin
5e457b0cead93b79d85b77de319ffd2865866ac494c872bf7eeed3e5fe1fc559
pdf-font-stream PDF embedded font (sfnt) at offset 0x742D 9904 bytes