Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32f342d5beb3a4d…

MALICIOUS

PDF

43.9 KB Created: 2020-08-12 07:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7621115657cabb094884a10b4fa24f72 SHA-1: ec04567c70a0e59f8eeb7c916e4efdedc08abe73 SHA-256: c32f342d5beb3a4de73570093ae3eafec1a09fe5e3f1933eed8ee53a5e17876d
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a piano sheet music PDF. It also contains a large number of links to other PDFs hosted on Shopify, likely as part of a link farm to improve search engine ranking for malicious content. The document body contains obfuscated text and metadata indicating it was generated by wkhtmltopdf, a tool often used to create malicious PDFs. 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=can+you+feel+the+love+tonight+piano+sheet+pdf
    • http://files.pathsforwholeness.com/uploads/1/3/2/6/132695575/jeroranupim_firuvo_nonapabiwoz.pdf
    • http://delezo.cliffjacobsonmft.com/uploads/1/3/0/7/130776644/nefakop-mewajejeda-nuzuretugin.pdf
    • http://files.minnesotaswimcamps.com/uploads/1/3/0/8/130874474/a9059.pdf
    • http://files.capetownwritersretreat.com/uploads/1/3/2/7/132740852/tosasiwalotudopakilo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7870/3511/files/15669278484.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/angle_relationships_equations_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/sowaresoxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/0032/2458/files/rozodono.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4241/files/optiplex_780_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86662201832.pdf
    • https://cdn.shopify.com/s/files/1/0438/4204/4066/files/xuvijiziw.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/xemawinemupavutumibosaxon.pdf
    • https://cdn.shopify.com/s/files/1/0451/3356/2010/files/askep_bronkopneumonia_pada_anak_nanda_nic_noc.pdf
    • https://cdn.shopify.com/s/files/1/0431/1583/9645/files/fivetovozalutemivir.pdf
    • https://cdn.shopify.com/s/files/1/0439/2953/4632/files/29625303656.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/67581857413.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_off00005957.bin
2be0c46d8fe56b070af82699919d3a45f3628ee00d160b35ed34b8c65fa3b5e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x5957 5272 bytes
font_01_sfnt_off00006b5f.bin
ab2085df106f912e36e9d82f6eddd1d8370442e734cb514daf9fefff968514ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5F 9852 bytes
font_02_sfnt_off00008d4b.bin
46d9b83afd797048ab251ddfc9ca9a6db44f3280724c231f6a80a061bcc6fc12
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4B 16120 bytes