Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2d74285873d5a71…

MALICIOUS

PDF

53.5 KB Created: 2020-10-18 21:36:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 92466fb9ccf018b4dc1096a275b420ed SHA-1: f9bb0e5f9b78bc878373d1b5489ecf3fc72cd91f SHA-256: d2d74285873d5a712367335264a073af73c9379d17b21de0ef1747f82b4b0e79
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/123?keyword=s+note+apk+4.4.2 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f8709053e418.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369782/normal_5f8a1ef300292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5f885f1d50dd1.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/roriturosiw.pdfIn PDF document text
    • https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/vuses.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/9777323.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/wetoviwebotuzo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369503/normal_5f8be3dc72bdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366628/normal_5f874e44528fe.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/1/0501/4215/0844/files/fraction_to_percent_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1168/9629/files/17509428919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0700/0219/files/19368455578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/sistema_de_ecuaciones_matrices_ejercicios_resueltos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8124/5879/files/4043561566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0613/8787/files/watercolor_artist_magazine_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5794/3206/files/wanted_poster_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8494/6850/files/wewofodixawebitejirotot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/22039175638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/9941/6485/files/tefakaxexofuxewixote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5300/2135/files/1963814412.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000814c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x814C 4928 bytes
SHA-256: 131d5c0b952fa55c2604682ed10ec98641e4fb52ef2af39f442abc9b9d45d8d7
font_01_sfnt_off00009228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9228 2512 bytes
SHA-256: ea32649d97d6c72666965648851a3f0963fd422ba6d9c20a7e8f8bc5c67911d9
font_02_sfnt_off00009d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D30 13868 bytes
SHA-256: a0711594d4138f9708b4259b48ebaa18cc316c8febef19f3341d0dfbce89fd98

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