Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6bae84e1a8128ed…

MALICIOUS

PDF

63.1 KB Created: 2020-08-31 19:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71fc80872c4daa3200f4b04405ecbfb4 SHA-1: 75968cda7435e2557ca580dd07b9746fcc9591cd SHA-256: c6bae84e1a8128ed3fa36151d81ed63f70affbd0b7575ce38839b62bc489f96e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though partially garbled, contains text related to 'Chambal fertilizers annual report 2017-18', suggesting a lure. The file also exhibits a PDF link farm heuristic, with numerous links pointing to Shopify domains, one of which is identified as the initial redirector.

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=chambal+fertilizers+annual+report+2017-+18
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/guvirovekerudidijekaruxit.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/dead_space_3_pc.pdf
    • https://cdn.shopify.com/s/files/1/0457/8505/5398/files/77404556244.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/nujodipelepewiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6661/3141/files/91715251372.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/86595943890.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6705/files/harvard_business_review_case_studies.pdf
    • https://cdn.shopify.com/s/files/1/0438/4063/5042/files/yoga_breathing_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4453/files/wovexalonudumomip.pdf
    • https://static.usrfiles.com/ugd/b8c837_c73295986d444f3382ac896738b636b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ee47d256e764390bb80a568278c3939.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_off0000b849.bin
f787fc482828e853fbcde5beec621b720526bdc7dbded59050e4e19b9e0c3df8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB849 5868 bytes
font_01_sfnt_off0000cc29.bin
f59f4677508a86774c5534a779af915765c3217e0df974a7090ba28f22946e50		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC29 10364 bytes

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