Malicious PDF — malware analysis report

Static analysis result for SHA-256 2040c5663f6692b1…

MALICIOUS

PDF

33.9 KB Created: 2020-10-05 04:35:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: d027b8b62aa301e335f473689ad0c7b0 SHA-1: 7834dc468b35be11b9d66fe62c7e39dd1e528240 SHA-256: 2040c5663f6692b1cb5d3241230f50692cd87099ed0d9c1917e96cbe9b3cf725
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=principles+of+ophthalmic+lenses+pdf In PDF document text
    • http://nobiseli.hollyjgreenup.com/uploads/1/3/1/3/131383775/23b61e50d2b67f.pdfIn PDF document text
    • http://files.realtalkusvi.com/uploads/1/3/0/8/130814914/xasijamijawowij.pdfIn PDF document text
    • http://files.emilybridghamportfolio.com/uploads/1/3/1/4/131437198/sonovera-wiwanobejiwelos.pdfIn PDF document text
    • http://xegag.doodlebugmusic.com/uploads/1/3/0/7/130775755/boranopugavojojozodo.pdfIn PDF document text
    • http://bavaki.vwtcorporate.com/uploads/1/3/1/4/131482993/3178533.pdfIn PDF document text
    • https://site-1039381.mozfiles.com/files/1039381/30237001085.pdfIn PDF document text
    • https://site-1037235.mozfiles.com/files/1037235/68108698810.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/1/0434/2389/1618/files/types_of_investment_banking_services.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6970/files/82558255043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0887/1581/files/14133079249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8154/3079/files/49508497594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/the_tint_shop_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7987/1911/files/nutaku_unlimited_coins_apk_no_survey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8481/1940/files/9665416494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4632/8737/files/limiting_reactant_problems_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4335/6825/files/76135112995.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000478d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x478D 5396 bytes
SHA-256: 9777b5dd675bce88265b59840a41a81dea80215f7f80dd48a3eb10624367ac98
font_01_sfnt_off000059b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59B9 9612 bytes
SHA-256: 38b688f0dd3170c489e3d63c06f3d6275c9232e7d0415849fc28e5f9c2f018cb

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