Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe77449eeff25951…

MALICIOUS

PDF

43.1 KB Created: 2020-08-18 20:11:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7745f02e95933571a2c3a49e61ee0b8c SHA-1: 10390af3b4d4c4f231aaf7099715929c72623c42 SHA-256: fe77449eeff25951fed364b11a9825844cd2212a5079a7d3b8a43cb33ea80fbe
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector at `https://ttraff.com/pify?keyword=cavernous+sinus+thrombosis+pdf`. This indicates a likely attempt to direct users to malicious content, potentially for phishing or malware delivery. The document body, though heavily obfuscated, contains references to the redirector URL and numerous other Shopify-hosted PDF files, suggesting a link farm strategy to improve search engine visibility for malicious content.

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/pify?keyword=cavernous+sinus+thrombosis+pdf
    • http://files.investphilippinestaiwan.com/uploads/1/3/2/7/132740338/77f2a63f95b395a.pdf
    • http://files.rohsptsa.org/uploads/1/3/1/8/131857847/713f9.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1432/files/tivotobukiteninidirovovi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/3339892969.pdf
    • https://cdn.shopify.com/s/files/1/0428/8518/5702/files/vudumelubamenujazeregu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/6592716238.pdf
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/pikesafasajudepixevigifa.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/minecraft_apk_0._13._2.pdf
    • https://cdn.shopify.com/s/files/1/0428/7817/3343/files/cedaw_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0437/5052/3031/files/69084557549.pdf
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/50249879557.pdf
    • https://cdn.shopify.com/s/files/1/0429/5491/5993/files/2577318415.pdf
    • https://cdn.shopify.com/s/files/1/0433/3384/5150/files/todatixabe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonamanasalusowalu.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_off00006b45.bin
e90a569002f9c8df1e2ca9d1e614aff9bab41faeb4cca69ec079bf239c02a7a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B45 5352 bytes
font_01_sfnt_off00007d4a.bin
c300c0f3e505b1271bf2d751a47b985132817e7d3783633ca92ea956407e407f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4A 10176 bytes

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