Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c2b6c758a7bdb3…

MALICIOUS

PDF

39.0 KB Created: 2020-08-30 04:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cdd1faa40ac25811e3e7094078b390c SHA-1: 5c6ad8914d95079e457e8f0637659ecf9a5a0add SHA-256: a8c2b6c758a7bdb30598ba3ee183fe1282eabe1b32184e8977382da441d57d55
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one specifically pointing to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a 'Kia rondo 2007 repair manual', suggesting a lure to entice users to click the malicious link. The presence of multiple PDF links also indicates a potential link farm for SEO manipulation, further supporting a malicious intent.

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/wix?keyword=kia+rondo+2007+repair+manual+free+do
    • https://static.usrfiles.com/ugd/e4ff69_cd4db13c5406490694f332ee79d3a9cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_a054bf630dbb487b9970bd36e6cc5104.pdf
    • https://static.usrfiles.com/ugd/b7306e_95020f25d65543af9d3d713855ec0961.pdf
    • https://static.usrfiles.com/ugd/934fc3_671179b55b32433c9301131bbb7e22c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_9bcc5f2c98884778aaea515996663cd5.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdfd312934db4f7abe1f82318d54d2ac.pdf
    • https://cdn.shopify.com/s/files/1/0434/6386/8573/files/wesewamixujofazogeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/zilapexosowufazijugogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3617/1688/files/important_terms_in_accounting.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7770/files/76268381578.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5501/files/76566324915.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8102/files/can_i_get_pregnant_after_a_tubal_ligation_and_endometrial_ablation.pdf
    • https://cdn.shopify.com/s/files/1/0438/9906/0392/files/diccionarios_biblicos_en_gratis_para_descargar.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_off000059b1.bin
403ae8c0fe972e229107c39de3f26f1ac6d89839d80f43f28464f67eec3c7031		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B1 5332 bytes
font_01_sfnt_off00006bc4.bin
1f662d674486d434afe897ce881629fc884d4be10c72eb4cf11bc576b8d20840		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC4 10304 bytes

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