Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f0f995955000bc…

MALICIOUS

PDF

44.5 KB Created: 2020-08-04 04:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b3044ebcf045a3ca7e2f9f42b1b55c7 SHA-1: 2ff811ad14806fbc7b17163edf8ebc68a9f5387f SHA-256: 19f0f995955000bc74a3ba89dba1530ab11b9e8377e49171a92bb6a4081fe6d9
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=basel+1+framework+pdf, which is likely used to obscure the final destination. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, a tool often used to create PDF documents from web content, further supporting the idea of a web-based lure.

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=basel+1+framework+pdf
    • http://files.thebreathcontrolcoach.com/uploads/1/3/1/4/131437012/4c2fa47faf2.pdf
    • http://files.madisonccl.info/uploads/1/3/2/6/132695915/9109759.pdf
    • http://files.keetoncorrections.com/uploads/1/3/0/7/130776819/352bd.pdf
    • http://gutomabel.integrityfurnitureco.com/uploads/1/3/0/7/130775934/zimimabexatukagejo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0227/3697/files/21464884074.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xizijifopaxefiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ginowojero.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/wekulaserukumidojujerifo.pdf
    • https://cdn.shopify.com/s/files/1/0439/2199/7979/files/nuladunuzuzujegife.pdf
    • https://cdn.shopify.com/s/files/1/0434/4401/1168/files/mabugiwezusufabagi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/durinozube.pdf
    • https://cdn.shopify.com/s/files/1/0428/0995/0367/files/98083134941.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/45419168900.pdf
    • https://cdn.shopify.com/s/files/1/0440/4540/2277/files/camara_de_comercio_colombia.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5911/files/38832937215.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/24509964527.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/11405312863.pdf
    • https://cdn.shopify.com/s/files/1/0434/7589/4422/files/pimunupesexakalijil.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_off00006613.bin
cc7b835da9d5f5020cdc1f8baf9e808ae338a605e76960b5173b9ceb67243447
pdf-font-stream PDF embedded font (sfnt) at offset 0x6613 5444 bytes
font_01_sfnt_off0000789d.bin
6ed25a4758f64030f2705c2cf5a4daa19527f3ad3b12aec128ab6f1a1caa0c95
pdf-font-stream PDF embedded font (sfnt) at offset 0x789D 14024 bytes