Malicious PDF — malware analysis report

Static analysis result for SHA-256 f859c5034976d8cf…

MALICIOUS

PDF

39.7 KB Created: 2020-08-07 08:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ceb5196048e7fd2a9e704db0c3ffbd06 SHA-1: 2906bd74b524ea13b2f0a2bdded8aaa5ba08ee32 SHA-256: f859c5034976d8cf17181ac1489e5b7dac71f36089c89eb612507771b09126d7
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links and a visible URL in the document body, all pointing to a redirector service. This service is designed to lure users with a 'free download' pretext, likely leading to malicious content or further phishing attempts. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link farm for SEO manipulation.

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=online+pdf+to+word+converter+multiple+pages In PDF document text
    • http://files.natanson-art.com/uploads/1/3/1/4/131483214/xiziwibuponutu.pdfIn PDF document text
    • http://dekumina.whitehorsevenue.com/uploads/1/3/1/8/131872225/935228.pdfIn PDF document text
    • http://files.cpcaannualconference.com/uploads/1/3/2/6/132682171/9775224.pdfIn PDF document text
    • http://files.socohomephotography.com/uploads/1/3/2/6/132695339/sunapogukila_lakeligo_bifasojusunoxe_tupugexex.pdfIn PDF document text
    • http://files.nicolejonesdevelopment.com/uploads/1/3/2/7/132740408/rakugodufosodajejiw.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/1/0441/3577/6408/files/brother_dcp_l2540dw_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/sumuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/bedaxisemegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/jorolipezubenuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0565/6736/files/putifilaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54729765263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7462/4419/files/29941158809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/wivubepelurumuluzoginebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/tipos_de_aflatoxinas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/linux_awk_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2630/8510/files/90099374799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/76782403404.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_off00005c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C76 5656 bytes
SHA-256: 727b738cdf86cc159a572d56dc05a3cbc1f0da34a40cddfc5397b7adc0779ef5
font_01_sfnt_off00006fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB1 9980 bytes
SHA-256: d047cf7108becad56d4956295ee4f2d0ed48ce0a5c6cf51005722f699c0da437

Open this report in the interactive analyzer, or submit your own file for analysis.