Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9fda8b72cce81ba…

MALICIOUS

PDF

43.9 KB Created: 2020-08-12 19:13:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e018ed317e59d16b79bf83a0789da4fd SHA-1: b1fb76bff9e653a8e4fee17b9a6b081223d7c9d9 SHA-256: d9fda8b72cce81babefe4215102bc7789786739a3f9856e9d451ccf4cd67142f
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=acalasia+tipos+pdf'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0428/7689/5398/files/84587543581.pdf'. The document body and heuristics also indicate a lure to execute commands, suggesting a multi-stage attack.

Heuristics 4

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.ru/pify?keyword=acalasia+tipos+pdf
    • http://files.paintingsbychrislwilliams.com/uploads/1/3/0/8/130814177/954c944.pdf
    • http://files.laurirakoff-chertok.com/uploads/1/3/2/6/132682851/73788e2d72b.pdf
    • http://fobopafur.feszty.com/uploads/1/3/2/8/132815000/6912799.pdf
    • http://files.tktphi.net/uploads/1/3/1/3/131379820/puwabodimukix-tididad-wibuxilup-vaxexig.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/84587543581.pdf
    • https://cdn.shopify.com/s/files/1/0437/4193/7818/files/84253198336.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/46032748769.pdf
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/98955898798.pdf
    • https://cdn.shopify.com/s/files/1/0435/2308/0344/files/my_story_elizabeth_smart.pdf
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/bytes_to_kilobytes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigorekotat.pdf
    • https://cdn.shopify.com/s/files/1/0441/1083/9960/files/ivan_stodola_baova_ena.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/10431101653.pdf
    • https://cdn.shopify.com/s/files/1/0430/9159/1317/files/43101386936.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/australian_visa_application_form_54.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/628620407.pdf
    • https://cdn.shopify.com/s/files/1/0438/3558/8770/files/29921744871.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_off00006ebd.bin
a9efdd101a2417eb2f5949ad37ba5b29d4d24e992bfc006650ca6ed695b8d84a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBD 5040 bytes
font_01_sfnt_off00007fed.bin
5c2bba744edbea1dceda5579ac27561f92aa229a1977045d086020e74a6f5031
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FED 10544 bytes