Malicious PDF — malware analysis report

Static analysis result for SHA-256 2730c7d29310eac2…

MALICIOUS

PDF

41.6 KB Created: 2020-10-15 13:44:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6a3974c307d0902c10b90270654be967 SHA-1: 29fd651e4e3c8ba49c18b66ccd9a96b163533d1b SHA-256: 2730c7d29310eac2b9df19e08532c70df4d5ee57d249179f63d7b8b9683f6461
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://cctraff.ru/123?keyword=motorola+verve+buds+200+manual+espa%25C3%25B1ol In PDF document text
    • https://site-1036993.mozfiles.com/files/1036993/58896654133.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/bewomo.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/40ddfa4d7f4e3e.pdfIn PDF document text
    • https://migirebunimalab.weebly.com/uploads/1/3/1/3/131383914/04830c1d7ed.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/3063209.pdfIn PDF document text
    • https://site-1041591.mozfiles.com/files/1041591/fajobubal.pdfIn PDF document text
    • https://site-1040329.mozfiles.com/files/1040329/sufetenabexigazakokuvox.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/1/0480/1485/2255/files/descargar_perdona_pero_quiero_casarme_contigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2771/2165/files/86199781687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/great_west_lifeco_conference_call.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7956/4448/files/kingdom_hearts_drawing_pencil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2089/3851/files/kulurowikowuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1714/1909/files/36323141771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/0385/5015/files/70438718379.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_off000061d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D9 5796 bytes
SHA-256: 1d9a4081b5885f16eba8bf5a79fb9a3bb45014f4af31a60c74669cfd5f7e3b38
font_01_sfnt_off0000753a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753A 10008 bytes
SHA-256: bd65b36e859cfb0c8dc55f2114f9850018147e2ab2ab46181f6b33ab701c1c94

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