Malicious PDF — malware analysis report

Static analysis result for SHA-256 4272a916223f0ab6…

MALICIOUS

PDF

41.0 KB Created: 2020-08-20 13:02:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4648d6f187b65d1d74df8bcec9272782 SHA-1: 85199eded56454969a681a27794e8958fad6ceb1 SHA-256: 4272a916223f0ab696d681e0f0fb1e5d5108f5e0c9bab82fa0f89605b44fce40
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, a technique often used for SEO poisoning or to distribute malicious content. One of the embedded URLs, https://ttraff.cc/pify?keyword=rammstein+alter+mann, is identified as a known malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document. The presence of numerous links, including the malicious redirector, strongly indicates an attempt to direct users to harmful websites.

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=rammstein+alter+mann
    • http://files.walterslawpc.com/uploads/1/3/2/3/132303081/8124947.pdf
    • https://cdn.shopify.com/s/files/1/0428/8466/1407/files/2949765330.pdf
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/ecommerce_website_templates_free_github.pdf
    • https://cdn.shopify.com/s/files/1/0435/6666/1791/files/sony_ericcson_w_580i.pdf
    • https://cdn.shopify.com/s/files/1/0438/3653/9045/files/aircraft_parts_and_their_functions.pdf
    • https://cdn.shopify.com/s/files/1/0434/5049/9222/files/51987374403.pdf
    • https://cdn.shopify.com/s/files/1/0430/2376/1571/files/mewatit.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/27824911891.pdf
    • https://cdn.shopify.com/s/files/1/0428/9721/1558/files/statutory_warranty_deed_form_washington_state.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/rusabe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3066/5637/files/43772014522.pdf
    • https://cdn.shopify.com/s/files/1/0432/6598/2632/files/rirofovawubarumeruvukanur.pdf
    • https://cdn.shopify.com/s/files/1/0435/8393/0527/files/and_so_but_because_worksheets.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_off00005d01.bin
7b7ed8df2926e176bd6e1d30fd0324792a0e3a49bfa9b43602e44bd219462520		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D01 4836 bytes
font_01_sfnt_off00006d57.bin
682885c171cca661a437eedf137537d1a2d73cdabf688e47afb283239e4f216c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D57 13256 bytes

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