Malicious PDF — malware analysis report

Static analysis result for SHA-256 4515f923ec0938ae…

MALICIOUS

PDF

40.9 KB Created: 2020-10-10 01:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 84b7ce57592668b0b2bc09411830b4ee SHA-1: e06c564625b050924075c844d434bcfe34038543 SHA-256: 4515f923ec0938aefd2754745aad6112cff08c30b31a8ecbfa5b092fa1893e82
122 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cctraff.ru/strik?keyword=a+taste+of+blackberries+pdf+free+download In PDF document text
    • https://site-1036950.mozfiles.com/files/1036950/6656643030.pdfIn PDF document text
    • https://site-1038322.mozfiles.com/files/1038322/31031983927.pdfIn PDF document text
    • https://site-1037157.mozfiles.com/files/1037157/tonoxapaj.pdfIn PDF document text
    • https://site-1040561.mozfiles.com/files/1040561/wixidusotemifatunugazu.pdfIn PDF document text
    • https://site-1036820.mozfiles.com/files/1036820/japezekutozekuvixinakor.pdfIn PDF document text
    • http://lodex.troop188ankeny.org/uploads/1/3/0/7/130775350/mozog.pdfIn PDF document text
    • https://site-1037120.mozfiles.com/files/1037120/patidaw.pdfIn PDF document text
    • https://site-1037207.mozfiles.com/files/1037207/rotufuluxanu.pdfIn PDF document text
    • https://site-1038827.mozfiles.com/files/1038827/52384369006.pdfIn PDF document text
    • https://site-1044192.mozfiles.com/files/1044192/24314469580.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7885/3284/files/84064610586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7971/9330/files/tank_trouble_2_hacked.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7999 5432 bytes
SHA-256: c2345f290607be540718360c7a6626cbd099c8fd45da46823b0bff8538528883

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