Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a041eb87170c17…

MALICIOUS

PDF

40.8 KB Created: 2020-08-25 11:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c382ddc3ae4e3e8ae8477c90e23d610 SHA-1: ad4bb9b59c421c4e4f9253dc041842c7cd1a6fa4 SHA-256: f3a041eb87170c176cd8c299ecb2fcd69fa74a0121df6bb9e11e000ee8ffee3a
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector, disguised as a 'Chisinau nightlife guide'. The primary malicious URL, https://ttraff.cc/pify?keyword=chisinau+nightlife+guide, is designed to redirect users to further malicious content. The presence of numerous PDF links, many hosted on Shopify, suggests an attempt to obscure the final destination and potentially leverage SEO tactics for distribution.

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=chisinau+nightlife+guide
    • http://luwivozif.denisegrams.com/uploads/1/3/0/8/130873965/3a912e4278e2.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2324/files/seboxiredoto.pdf
    • https://cdn.shopify.com/s/files/1/0432/3174/0066/files/lurixilinog.pdf
    • https://cdn.shopify.com/s/files/1/0457/3544/4646/files/jojeromurugifejatinamuze.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9507/files/polaris_performance_parts_canada.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2938/files/32965537663.pdf
    • https://cdn.shopify.com/s/files/1/0457/5831/6700/files/58043098269.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/besasepomolajudo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/lexipagalo.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_off00006444.bin
b29dd8e62d982a42e2a3d12db4b52d3627fb833b46b535f359b460a166b8eb66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6444 4980 bytes
font_01_sfnt_off0000752b.bin
568b56f7aa2deda37e9e85332cb58ce8c5967b401c89d0734a6ee01dcab00632		 pdf-font-stream PDF embedded font (sfnt) at offset 0x752B 9864 bytes

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