Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fd5933d49f561e2…

MALICIOUS

PDF

34.7 KB Created: 2020-10-08 10:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ac84fa14fc4348b2253eaa16032041a2 SHA-1: f0f3242bad463ec12ba9b6c44f04e23eca84ac6b SHA-256: 2fd5933d49f561e25ed764cb8ed0238835eeec523d18880ffe246be7d76f0cc2
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=descargar+somos+de+calle+remix+anuel In PDF document text
    • http://files.nationalgeomaticscomp.ca/uploads/1/3/2/6/132696558/8382422.pdfIn PDF document text
    • http://files.hartfeltservices.com/uploads/1/3/1/8/131871729/nofupozisadazodadok.pdfIn PDF document text
    • http://lufabad.bubbasdeli.com/uploads/1/3/1/4/131437595/pobitobigujisal.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/1/0486/4786/4478/files/casio_ctk-720_driver_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8769/7822/files/kovivawipokewisamug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0189/9938/files/womens_long_sleeve_rash_guard_built_in_bra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2448/5016/files/where_the_red_fern_grows_2003_trailer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9761/9621/files/jifutufubas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/equations_of_parallel_lines_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2226/4738/files/teleport_command_minecraft_switch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/0663/1325/files/24162005066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2912/6550/files/aldine_home_access_center.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8242/7815/files/najutufokopuluke.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 5

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_off00004718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4718 5324 bytes
SHA-256: 425469cbcb26fe0f466fd46b12586e1da859f0254c7c1921d4f1970694e4cb24
font_01_sfnt_off00005928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5928 10732 bytes
SHA-256: 4882783aec9f1365b1df1c827d59d0e31c237354e77236a4eb38b94a564b481f

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