Malicious PDF — malware analysis report

Static analysis result for SHA-256 2929dcabddefea08…

MALICIOUS

PDF

48.4 KB Created: 2020-09-04 23:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffdd7a410518d4ed9c0737127d381ad3 SHA-1: 4878735985c53b2102e316a50268c45ce369be0b SHA-256: 2929dcabddefea0888056b38c41da332460d265bfc13b7ad9cc9f83e6af98545
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with many pointing to a redirector service. The document body appears to be garbled but contains a URL that matches the redirector. The primary heuristic indicates the PDF is a malicious redirector, and another points to a link farm strategy. The embedded links likely serve to direct users to malicious content or phishing pages.

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=agnisakshi+title+song++naa+songs
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/gujozezaliwibozurobugo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/94232814438.pdf
    • https://cdn.shopify.com/s/files/1/0439/4647/5675/files/ferroli_boiler_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/3151/8622/files/66469528452.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/33343449262.pdf
    • https://cdn.shopify.com/s/files/1/0459/9378/7559/files/free_template_powerpoint_minimal.pdf
    • https://cdn.shopify.com/s/files/1/0437/3472/8853/files/tumoxobexopevinur.pdf
    • https://cdn.shopify.com/s/files/1/0433/9531/7911/files/85330993326.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/88010496485.pdf
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/2726157158.pdf
    • https://static.usrfiles.com/ugd/b8c837_5cd6842a3f7347c39226023b7cdfbb40.pdf
    • https://static.usrfiles.com/ugd/b8c837_741b7f6a61d14d2093375e09dc85b30b.pdf
    • https://static.usrfiles.com/ugd/e4a001_da8a2a134525485f9f506294b4f5b07d.pdf
    • https://static.usrfiles.com/ugd/b8c837_645c089ac308464b8c1b746283966581.pdf
    • https://static.usrfiles.com/ugd/289c5e_3aa890cff703481e81a6630ab85036b2.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_off00007b9d.bin
9d49c05255a27cd8b5848a10ad53b51712e04336139258e50810e643866a0622		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9D 4904 bytes
font_01_sfnt_off00008c52.bin
0a7e43aa6753c8420560c712943fcf04f4623e67340514015fb6543cc472662d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C52 12752 bytes

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