Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec396d81140b661…

MALICIOUS

PDF

53.7 KB Created: 2020-08-12 13:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54bdf0056efff0a2ef8b614a7ddd36a4 SHA-1: 1e5ce37e52d6cb835c3094ad2df3a8100902c4c8 SHA-256: 7ec396d81140b661a7e5dacfeb4335b7923bfc8db0cbe65c6f725dac18ef0102
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, with a critical heuristic firing indicating a link to a known malicious redirector service. The document body, though heavily obfuscated, also contains the URL for the redirector. The presence of numerous external links, many pointing to Shopify domains, suggests a link farm or redirection strategy to obscure the ultimate malicious destination. No scripts were extracted, and the document body did not provide further actionable content beyond the embedded URLs.

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=descriptive+analysis+in+sensory+evaluation+pdf
    • http://solevi.magiczwork.com/uploads/1/3/0/8/130814328/2628935.pdf
    • http://files.jjohnsonartist.com/uploads/1/3/2/7/132741535/notewebelukamomi.pdf
    • http://files.miraclesinmassage.com/uploads/1/3/1/6/131606631/bomowirid-vejoxugek.pdf
    • http://lukuna.bufordwolvesden.com/uploads/1/3/2/6/132681670/89a2e1b46edcb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/jibopuvemewora.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/48872673066.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/13095472520.pdf
    • https://cdn.shopify.com/s/files/1/0429/0173/3542/files/concrete_curb_forms.pdf
    • https://cdn.shopify.com/s/files/1/0431/0731/9974/files/81817287410.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/32334746283.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/12041511523.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4447/files/53243608754.pdf
    • https://cdn.shopify.com/s/files/1/0433/0648/3876/files/convert_webpage_to_on_ipad.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8707/files/95453889051.pdf
    • https://cdn.shopify.com/s/files/1/0434/1940/2405/files/virijewatobabedaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/31867794206.pdf
    • https://cdn.shopify.com/s/files/1/0437/6389/2375/files/libros_para_aprender_ingles_americano.pdf
    • https://cdn.shopify.com/s/files/1/0433/7077/4693/files/20171641198.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_off0000940b.bin
753692b77e2fb51a7fff62faaefeca4a63e120597efeaa2ad4dbd2836e70fd15
pdf-font-stream PDF embedded font (sfnt) at offset 0x940B 5312 bytes
font_01_sfnt_off0000a638.bin
cd477f2838ebfeb784180097454363e2ae018f27d8f36d413e66810145795e26
pdf-font-stream PDF embedded font (sfnt) at offset 0xA638 10312 bytes