Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f5e87bd3680b4cc…

MALICIOUS

PDF

40.4 KB Created: 2020-09-06 22:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6799b9ea441acf4a90a63dc526d986da SHA-1: ce7230348fc38c920e5b715f40ae6813ed9a3cc3 SHA-256: 1f5e87bd3680b4cceb94a21c6769b580796b94796b33ad883f742a17ec920b58
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to manipulate search engine results. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.link/wix?keyword=autobiography+template+pdf', suggesting the document is intended to lead users to malicious content. The document body, though heavily obfuscated, contains references to 'autobiography template pdf' and the authoring application 'wkhtmltopdf', reinforcing the lure. The presence of a malicious redirector URL indicates a likely phishing or scam attempt.

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.link/wix?keyword=autobiography+template+pdf
    • https://cdn.shopify.com/s/files/1/0428/6749/0975/files/jupulipelefijegisituvi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6584/files/lirep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34530012154.pdf
    • https://cdn.shopify.com/s/files/1/0461/4337/3480/files/48486226164.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/loxonotekimozupe.pdf
    • https://static.usrfiles.com/ugd/b8c837_ecdd369a514c4b62820ed775c77ba857.pdf
    • https://static.usrfiles.com/ugd/ad8f3a_0010d1cab4e44c27bbfbca8860122307.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc29d997332d4c2399494376c25d3128.pdf
    • https://static.usrfiles.com/ugd/b8c837_04bdddd48700441bb53d7274cfbef8dd.pdf
    • https://cdn.shopify.com/s/files/1/0431/2249/1541/files/warhammer_40k_eldar_codex_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/6368/0929/files/50127562149.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_off00006138.bin
12caad8838daa13ff1011698ba6c498a682592d86ea22348a56b15c63c81e2a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6138 5508 bytes
font_01_sfnt_off000073d3.bin
7f57ff3e6b99fba6173f06efe9ea36d051006ed4db7d9b488bcdb45fdd3122dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D3 9836 bytes

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