Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00cf7b48d9c9e1f…

MALICIOUS

PDF

43.6 KB Created: 2020-09-30 04:48:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 63d678dced7136e8c2427340ae7af1cd SHA-1: 64dbb05ee51938ac3910bcbc4c74d892b3c48247 SHA-256: d00cf7b48d9c9e1f1f8e973a15d5c5ef6b2becdf8c9e930928d20eab25a988dc
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://ggtraff.ru/strik?keyword=ada+low+cholesterol+diet+pdf In PDF document text
    • http://files.tamramccarthy.org/uploads/1/3/2/6/132682230/guxawokali-dusiwigejev.pdfIn PDF document text
    • http://files.hotschottfrenchbulldogs.net/uploads/1/3/2/6/132681863/reraravuvi_jowumifapitibe_xototonorax.pdfIn PDF document text
    • http://wopebedab.theflorecerproject.com/uploads/1/3/1/3/131379478/masedejasurekawuwe.pdfIn PDF document text
    • http://files.vierihairsolutions.com/uploads/1/3/1/8/131856770/8402062.pdfIn PDF document text
    • http://gepuzi.studentfinanceboard.com/uploads/1/3/1/4/131407945/kefenoliv-fuminel-lamawefapego-daxadatepafo.pdfIn PDF document text
    • http://files.championtheatre.com/uploads/1/3/1/4/131406348/gexadifove-jaluluzubaxa-fijivuj-pukotutunab.pdfIn PDF document text
    • http://files.fabulous-you.biz/uploads/1/3/1/0/131070149/sukowuruzewalor-nitazipupe-kimimarodojukeb.pdfIn PDF document text
    • https://site-1037227.mozfiles.com/files/1037227/suxosid.pdfIn PDF document text
    • https://site-1037909.mozfiles.com/files/1037909/gegadov.pdfIn PDF document text
    • https://site-1037124.mozfiles.com/files/1037124/vetifakisilamu.pdfIn PDF document text
    • https://site-1037909.mozfiles.com/files/1037909/muxovatebunabawiro.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/18057377423.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc336f04-d6c4-4cbb-b7ee-6d3ac682b8fb/89802269303.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d79ef62-e2d1-4475-bad0-98c83a403459/sarelopafatob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0adfb29-caad-4dcc-a802-7a859c224ac9/15792272558.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB3 5324 bytes
SHA-256: d692e7de90b05f91d50b158a52e1c530d01946a43bc829b538f6ed59fa44be45
font_01_sfnt_off00007ddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDC 10520 bytes
SHA-256: 9ffbee853881b90ef79738d533696922079f39258dec7d518744627a3c09563a

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