Malicious PDF — malware analysis report

Static analysis result for SHA-256 23cda0058d4381fd…

MALICIOUS

PDF

48.6 KB Created: 2020-09-01 12:14:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aed0d9aa3cb83ebcd7bf9f871230f893 SHA-1: 471d404d28850e74b090f7c7bc3193cda146a713 SHA-256: 23cda0058d4381fdb13f5b90eb6790d6bb13cf1c840accc697c324bb3f7a5a1e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=administration+manager+resume+template'. This link is presented within the document body, disguised as a resume template, indicating a social engineering lure. The PDF also contains a link farm heuristic, suggesting an attempt to manipulate search engine results or distribute content widely. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/wix?keyword=administration+manager+resume+template
    • https://cdn.shopify.com/s/files/1/0454/5744/0926/files/scientific_approach_to_management.pdf
    • https://cdn.shopify.com/s/files/1/0427/4687/1974/files/70588364207.pdf
    • https://cdn.shopify.com/s/files/1/0439/4395/2539/files/puertas_logicas_ejercicios_resueltos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9983/2995/files/60321402134.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/unanswered_question_answers.pdf
    • https://cdn.shopify.com/s/files/1/0444/4497/5271/files/el_alquimista_hp_lovecraft.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e02d159814f48ccad7b6ad8e4ef7be0.pdf
    • https://static.usrfiles.com/ugd/defcb2_cf9a3ccb3b1240fd867b7eb4bcfc23b7.pdf
    • https://cdn.shopify.com/s/files/1/0437/1991/7717/files/payroll_management_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/83274643861.pdf
    • https://cdn.shopify.com/s/files/1/0437/2201/4870/files/18253441044.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_off00007ec3.bin
894e795405a5a3f63072c0b4bae7857bcf5a58aac0e3363c78425720ee51def3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC3 5268 bytes
font_01_sfnt_off00009094.bin
b19fdf97b729751437ef258fb5ab4a4ab4cddfe91672e7cf842dd9ce72bf310d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9094 10932 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.