Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcb8944d83db0c07…

MALICIOUS

PDF

45.1 KB Created: 2020-08-31 10:43:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58913c7fb3df14ccb363a574fd965c23 SHA-1: b28d43edf0641ea0055ed449efa41c1aff687c7c SHA-256: bcb8944d83db0c07643879e3af897bcc7b6914e887434a755bffc5ba1b4d2fd6
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=gta+v+scramjet'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO poisoning tactic. The document body contains text related to 'Gta v scramjet', reinforcing the lure.

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.com/wix?keyword=gta+v+scramjet
    • https://cdn.shopify.com/s/files/1/0429/0704/1959/files/67413221187.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/lightest_reader_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/12764237030.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/xuginuxoxe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3988/2402/files/bts_pneumonia_guidelines_2018.pdf
    • https://cdn.shopify.com/s/files/1/0463/2461/3275/files/amortized_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4103/8229/files/fosroc_expandafoam_data_sheet.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_7c02d8fc921b44e18fad7cc9af04febe.pdf
    • https://static.usrfiles.com/ugd/b8c837_f07c65a23bd341119e646d37fcfb6133.pdf
    • https://static.usrfiles.com/ugd/a59130_14239c905d7a4085b918f957c5de3657.pdf
    • https://static.usrfiles.com/ugd/63d3ad_e1ed706af6984eb49e6793998e68bfd0.pdf
    • https://static.usrfiles.com/ugd/6116da_5299cf87769c41aa83588a6f5ba84c29.pdf
    • https://static.usrfiles.com/ugd/de3d83_c560019054d14b6185aee28ac6f4849c.pdf
    • https://static.usrfiles.com/ugd/b8c837_0394808d7bf8439389b815fea504f58a.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_off0000675b.bin
5cf2cb8c66d34cf9e91d7bccc188b947a55a2714834a818eeb794dc866484b4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x675B 5080 bytes
font_01_sfnt_off00007899.bin
82aefe84b68190012b016e8300007862435df9775d54b41cf2f8c1dc3349e106		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7899 15388 bytes

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