Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8e88f1ab597d608…

MALICIOUS

PDF

49.0 KB Created: 2020-08-16 18:17:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5027cf6a908356d7a0d116a37a20c6e9 SHA-1: 80ab53f2e39906001ced5ea6757ddc1c947a5720 SHA-256: b8e88f1ab597d6088ae8da3aabc223c0af46cab0fa221c663243ce51384ea512
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious domain, disguised as information about a vehicle's engine number. The PDF also contains a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to host further malicious content. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=vehicle+information+by+engine+number
    • http://files.gemscorner.org/uploads/1/3/1/4/131437295/gunuxegevuridibiboku.pdf
    • http://files.bobadneystudio.com/uploads/1/3/0/7/130776499/2448495.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/mexidolup.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/28317640145.pdf
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/bemaninaxufudivix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/2020_calendar_with_week_numbers_printable.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/razog.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/56747793379.pdf
    • https://cdn.shopify.com/s/files/1/0433/7218/3710/files/91801868923.pdf
    • https://cdn.shopify.com/s/files/1/0431/1980/4567/files/fofegenir.pdf
    • https://cdn.shopify.com/s/files/1/0437/7467/3057/files/78033806780.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/tizazopuligefawo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8594/5246/files/baixar_curso_de_ingles_em_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8581/files/57218561642.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_off000074de.bin
98df58716bbbb99c0d618497e717374421b0b524280e073ce2e513720cbabdea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DE 5204 bytes
font_01_sfnt_off00008668.bin
4bd7ad244715ddd0d46d1f328f0841e0a5e770671f6dde1b10ae3969f4e9de02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8668 10012 bytes
font_02_sfnt_off0000a8ac.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8AC 4324 bytes

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