Malicious PDF — malware analysis report

Static analysis result for SHA-256 c06792721bb6f208…

MALICIOUS

PDF

43.5 KB Created: 2020-10-05 18:48:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 16537eb667f41c1d671590203dd18447 SHA-1: 55e06f6a79b9722dfa51776b463a583f113bbe7c SHA-256: c06792721bb6f208980badf462b3f7203a50c85d565177c7d9ee89ab936f5753
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://gettraff.ru/strik?keyword=credit+note+format+in+gst+pdf In PDF document text
    • https://site-1039513.mozfiles.com/files/1039513/30575428564.pdfIn PDF document text
    • https://site-1037069.mozfiles.com/files/1037069/23226043640.pdfIn PDF document text
    • https://site-1040794.mozfiles.com/files/1040794/vejamatiralukuxukarusale.pdfIn PDF document text
    • https://site-1038627.mozfiles.com/files/1038627/vomepivisulefoke.pdfIn PDF document text
    • https://site-1040571.mozfiles.com/files/1040571/guwevitedipo.pdfIn PDF document text
    • http://files.progressingonpurpose.com/uploads/1/3/0/7/130776079/9521502.pdfIn PDF document text
    • http://datezola.lifestreamfamilywellness.com/uploads/1/3/1/1/131163635/9f54daf.pdfIn PDF document text
    • http://levono.mydesignsbypamela.com/uploads/1/3/2/3/132303054/muxikagepeto-xefunudofon-mopotuso-mupokoweguvug.pdfIn PDF document text
    • http://files.geraldinepilgrim.com/uploads/1/3/2/8/132815346/6780435.pdfIn PDF document text
    • http://files.youvegotmaille.net/uploads/1/3/2/7/132740633/redevu_fijotiregu_fitomow.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/1/0495/8561/9094/files/vinonepivix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/rogekatuwodevuveno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/evaluative_feedback_in_communication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/0976/3222/files/random_rgb_color_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1137/4230/files/9729327143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1844/5223/files/52425543568.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_off00006d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D44 5232 bytes
SHA-256: 9928aa611761c048bd1a66183d8383db666dc84bcd116edb06dc20ac29b01241
font_01_sfnt_off00007ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF7 9984 bytes
SHA-256: 9ff84ae1eb0cc2e9d11dcd056d33fd4b77f3d3f3aaf8ae20b90f69ddc7a34d76

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