Malicious PDF — malware analysis report

Static analysis result for SHA-256 edf370fb7c3ccf97…

MALICIOUS

PDF

41.3 KB Created: 2020-08-06 18:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 869942a28c638358b0f79da343ef8656 SHA-1: 39b2dbbadb4c138f6339f7f5ad3c28c41b7f892a SHA-256: edf370fb7c3ccf97b5f8b34bfa99906576e2c03e8e23084f32a88f260993ac7a
120 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, pointing to 'https://ttraff.cc/pify?keyword=agentur+f%25C3%25BCr+arbeit+arbeitsbescheinigung+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, a PDF link farm heuristic suggests the document is designed to host numerous external links, many of which point to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. 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=agentur+f%25C3%25BCr+arbeit+arbeitsbescheinigung+pdf
    • http://files.vincentrussodesigns.com/uploads/1/3/2/6/132695813/4033198.pdf
    • http://files.pathspersonalfinance.com/uploads/1/3/2/7/132740277/pewixo.pdf
    • http://files.veganempire.net/uploads/1/3/2/6/132681884/kufimaririti-bokisawaxuf-zelovi-vobobilurim.pdf
    • http://wosuz.adentaperu.com/uploads/1/3/0/8/130814535/rirenosoxuwoxe_rikajeluxo.pdf
    • https://cdn.shopify.com/s/files/1/0440/0332/8150/files/mc_helicopter_mod.pdf
    • https://cdn.shopify.com/s/files/1/0428/5415/4406/files/89920029047.pdf
    • https://cdn.shopify.com/s/files/1/0434/8159/6066/files/detagavezo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/depidaziboj.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/48552746070.pdf
    • https://cdn.shopify.com/s/files/1/0431/9975/8497/files/30682476604.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/lobubajajonilagitefikufaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/82592715700.pdf
    • https://cdn.shopify.com/s/files/1/0436/2688/9369/files/65686872715.pdf
    • https://cdn.shopify.com/s/files/1/0437/8502/7745/files/mamepemukilenoxoferezaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/iphone_xray_app.pdf
    • https://cdn.shopify.com/s/files/1/0427/4195/6775/files/saxon_math_course_1_solutions_manual.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_off00005da8.bin
b5ce9173386d84dc1c17761a78bf5c77b640174edc812fc9f0402f9ef8e399db
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA8 5632 bytes
font_01_sfnt_off00007094.bin
8ec7266ded789c59b35081c01b3b0d5f98cf6cc81f1c91290bd9eec0ba216daa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7094 11372 bytes