Malicious PDF — malware analysis report

Static analysis result for SHA-256 086467d99f1644ef…

MALICIOUS

PDF

53.1 KB Created: 2020-07-31 18:42:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b1112dd4b2e1616a66c6ab01caeff2d4 SHA-1: e1afbacb9f68e2ce483420b72edda25357a1eb94 SHA-256: 086467d99f1644efd08630d378300d668390907005a8189224ca6f3f183e5216
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm pointing to a redirector URL, identified as a malicious SEO link farm. The ML classifier strongly indicates maliciousness. The embedded URL and the document body text, though obfuscated, contain references to the redirector URL, suggesting an attempt to drive traffic to malicious infrastructure.

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=rrb-+1099-+r In PDF document text
    • http://files.milsurpselect.com/uploads/1/3/2/6/132681296/wofutelusinuga-memubigofelufi-bizuzulibevov.pdfIn PDF document text
    • http://files.detailsandhighlights.com/uploads/1/3/1/6/131607712/moboxofupi.pdfIn PDF document text
    • http://files.hfttreefarm.com/uploads/1/3/1/4/131452997/luwuzaxasasetobup.pdfIn PDF document text
    • http://files.infinite-life.com/uploads/1/3/0/7/130738765/7deff942d9a0f2e.pdfIn PDF document text
    • http://files.westerncanineacademy.ca/uploads/1/3/1/3/131383664/lobop.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/1/0431/9094/3902/files/29128415543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/11111435591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/falukib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2327/0042/files/jepuraxefeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6651/files/lokaraxaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/20942031064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2019/7789/files/pipesifixunibujesedubaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6666/1800/files/dugovufuxitufutetoxafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9200/9379/files/lorimelimuzupunitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6577/0133/files/gadanavipipekakovobof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91300886864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6737/5770/files/pabaposopogofofunasomarop.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_off0000858a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858A 4788 bytes
SHA-256: 6bf200a998a5472cafae9aab42201b7970dcb151af730d6d0f7b888db3c8b665
font_01_sfnt_off000095f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F2 15392 bytes
SHA-256: 2e584e793d0d78f64248917f19ab44473cba7fd37ea7401dae1beaebab084d65

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