Malicious PDF — malware analysis report

Static analysis result for SHA-256 d86962d0631b6b20…

MALICIOUS

PDF

45.1 KB Created: 2020-08-11 14:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67aa2af51781b14edb5d2533c2f88efd SHA-1: 580b7c4b0eaaab07587d3f36b1d129aaa6f64f9d SHA-256: d86962d0631b6b204751190c9807fcb11e4b18514d3db30a5034c20fc657ca3e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, a technique often used to create SEO link farms or to redirect users to malicious sites. One of the primary links points to a known malicious redirector. No scripts were extracted, but the presence of numerous external links suggests a delivery mechanism for further malicious content.

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://ttraff.ru/pify?keyword=akhund+darweza+baba+pdf In PDF document text
    • http://vutoxe.saturnfireworks.com/uploads/1/3/1/3/131398560/weziwogafax.pdfIn PDF document text
    • http://files.nikkiwoods.com/uploads/1/3/1/8/131856950/delod_zekopelukufoni.pdfIn PDF document text
    • http://files.cmm-programmer.com/uploads/1/3/1/1/131164546/1264826.pdfIn PDF document text
    • http://files.changinglungcancer.com/uploads/1/3/2/7/132740533/babolukutuge_gejijorunururiw.pdfIn PDF document text
    • http://files.otterworksusa.com/uploads/1/3/1/4/131437351/tasegus-rekafi-zeganusisaj-jigavulef.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/1/0433/0032/3478/files/virimokevixudomuzezudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65431134640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/xikalogebora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0491/2031/files/25496610703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3076/4968/files/99731720818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/tupobar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9114/0510/files/16682509155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9074/5246/files/84078602391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/ruwered.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/13217707976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8404/4705/files/list_of_months.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/radabosikegusagelumudedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6312/2843/files/fundamentals_of_fluid_mechanics_5th_edition.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_off000071ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71EC 5256 bytes
SHA-256: 3daaca8ed47aafdbd5487d0a21f7062dd9f77856f3591acec142be61f99a9cbe
font_01_sfnt_off000083d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D3 9912 bytes
SHA-256: dd0be35750fb0431c49eb9d23d7276715112e97dde713623aaaca5432509f336

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