Malicious PDF — malware analysis report

Static analysis result for SHA-256 b28d60619b40e524…

MALICIOUS

PDF

34.7 KB Created: 2020-08-19 10:40:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 117732dc040e1f200cbd101c58c34bb4 SHA-1: 67b54614a2843e449d5047591b34e9e811824fa3 SHA-256: b28d60619b40e524f0ce6efb58bc20aad165b8adb6d615cb91c06a71a18b92f7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded links to other PDF files, many hosted on Shopify, indicating a link farm. One of these links points to a known malicious redirector. The presence of a 'LOLBin Run Command' heuristic suggests that the document may also contain instructions for executing scripts or commands, potentially to download further payloads or establish persistence.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=va+va+dear+brother+song++audio
    • http://zabitowuf.ohiooutdoorstructures.com/uploads/1/3/1/6/131606490/sijusupogepokupo.pdf
    • http://files.coachellisriley.com/uploads/1/3/0/7/130738559/nodet_somukesiju.pdf
    • http://files.spccmd.com/uploads/1/3/0/7/130739910/vimanebatoxetadosu.pdf
    • https://cdn.shopify.com/s/files/1/0441/1123/3176/files/animaniacs_country_song.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/xetujexataliguwuxolejodo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2752/8871/files/kaxonozatikewaf.pdf
    • https://cdn.shopify.com/s/files/1/0439/9231/8110/files/fawalujuxesi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9039/4788/files/gusupovujipubuzuge.pdf
    • https://cdn.shopify.com/s/files/1/0432/2636/6116/files/54601671174.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3702/files/97091360096.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6262/files/amd_product_verification_tool_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/biblioteca_cristianismo_primitivo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1285/files/9830646371.pdf
    • https://cdn.shopify.com/s/files/1/0433/0412/4571/files/rozomape.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/77527649945.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_off000049a0.bin
703251ad79a2e3642f2749272e7a584bf1355918cc6953147586b54fd8936176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49A0 5220 bytes
font_01_sfnt_off00005b5d.bin
8a676615509cd204d74e284f7890fadc38360404198ba2033b1f4eb2a1c56b66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5D 10508 bytes

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