Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d68f5aec2cf504…

MALICIOUS

PDF

42.8 KB Created: 2020-08-31 00:54:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4b4202ce348199af1a93ca65e2f02df SHA-1: 3d3aaa9a307f01b2b57c949c0762f8e3c639e6f9 SHA-256: b0d68f5aec2cf5046565c15d6b626e41b73a0ace0f2c89326cb538fd8b1c78d1
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/wix?keyword=aquaponics+diy+filter'. This link is presented within the document body, suggesting a social engineering lure. The presence of a large number of external PDF links, many pointing to Shopify, indicates a potential link farm or content distribution network being abused. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=aquaponics+diy+filter
    • https://cdn.shopify.com/s/files/1/0440/6883/1382/files/may_2020_calendar_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3665/5259/files/30488318982.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/18539309837.pdf
    • https://static.usrfiles.com/ugd/b8c837_b1017a7d1e614278aeca2023679385cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_2cd2368c0c364fc0b2f561985575212e.pdf
    • https://static.usrfiles.com/ugd/f55bec_719412e290f349d6863f160bd4e4b04c.pdf
    • https://static.usrfiles.com/ugd/5360f8_73370b54b88842ac99f65e5296e4d8ef.pdf
    • https://static.usrfiles.com/ugd/df73ab_669b16257ae5481c9cf0e66a21d718d1.pdf
    • https://cdn.shopify.com/s/files/1/0432/5035/2296/files/bebidavevivofibol.pdf
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/gatazov.pdf
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/74678755701.pdf
    • https://cdn.shopify.com/s/files/1/0434/7287/9782/files/46504537993.pdf
    • https://cdn.shopify.com/s/files/1/0440/5719/8742/files/dukadukugu.pdf
    • https://cdn.shopify.com/s/files/1/0444/4412/3303/files/hak_paten_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/beredirinu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4905/7430/files/piwomiwifipubenez.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_off00005fcb.bin
dab1b50ea1d881f4b80cc6653c20b78fd3a307c1c669416aee6602cd92e2ecf0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCB 5368 bytes
font_01_sfnt_off00007213.bin
921b17cebf27161a3a6130e27837bef85d37792b87f1bb497a8066080b67046e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7213 2052 bytes
font_02_sfnt_off00007ac9.bin
5668fba16649f1ff093feb3d71a1277f332c4353752759e5998f75754f617fd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC9 10508 bytes