Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6b335da7f2b3116…

MALICIOUS

PDF

56.8 KB Created: 2020-08-06 21:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e03bfd2c1468bbfffd9c477d57323c4 SHA-1: e056979dd04f880a1f6cc1bb4d0891aee8349faf SHA-256: d6b335da7f2b311695c94a1ec8f5d2a2aeffc97919cab54b139d9cc97c1c9429
120 Risk Score

Malware Insights

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

The PDF file was generated by wkhtmltopdf and contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=carbon+dating+problems+pdf'. The document body is heavily obfuscated but contains the same URL, reinforcing its malicious intent. No scripts were extracted from this sample.

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=carbon+dating+problems+pdf
    • http://files.patprofit.com/uploads/1/3/0/7/130775712/967025.pdf
    • http://files.fernfarmcottages.co.uk/uploads/1/3/1/4/131437363/3148417.pdf
    • http://keweti.neelin.net/uploads/1/3/1/0/131070993/lakipokame.pdf
    • https://cdn.shopify.com/s/files/1/0438/3975/0294/files/41363437646.pdf
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/island_royale_script_2019_december.pdf
    • https://cdn.shopify.com/s/files/1/0436/0483/6515/files/biennale_cinema_programma.pdf
    • https://cdn.shopify.com/s/files/1/0430/1550/4029/files/9815725034.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/the_river_gary_paulsen_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/3120/5787/files/tawodopapu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/nivebuzemasisaxasuxomi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2401/5783/files/wonagobagaxofagip.pdf
    • https://cdn.shopify.com/s/files/1/0434/2281/0268/files/28386550696.pdf
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/67241201115.pdf
    • https://cdn.shopify.com/s/files/1/0433/1280/8091/files/37470359343.pdf
    • https://cdn.shopify.com/s/files/1/0439/5764/9566/files/vezorobiki.pdf
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/naxuwibigo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ca1.bin
7ff75df3d323bdbb66a266aa30e1e603f1cd9d4921df00811e6812397a5054bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA1 5404 bytes
font_01_sfnt_off00009ede.bin
1e3acbf836545d89407aa1b4e23e2310f4220b7cc4104a8c7e59940b62d93a6e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EDE 9944 bytes
font_02_sfnt_off0000c106.bin
84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727
pdf-font-stream PDF embedded font (sfnt) at offset 0xC106 16060 bytes