Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ef5b74cc30aa67…

MALICIOUS

PDF

44.0 KB Created: 2020-08-18 15:49:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1492aaa66fde58c471a68f4ce7c9c673 SHA-1: 55a33ed6fb97f21910a3cbbc9c1ad8995ecda664 SHA-256: 09ef5b74cc30aa67b14293f51b4233c1148ceb294c3d6b353cceef60498a0acb
194 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector infrastructure, which in turn points to a large number of other PDFs hosted on various domains. This pattern is indicative of a link farm or phishing campaign designed to distribute malicious content or lead users to fraudulent sites. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=ipcc+1.+5+report+carbon+budget In PDF document text
    • http://files.stayatlemas.com/uploads/1/3/1/6/131607712/patuguvep_nagizoki_selusowef.pdfIn PDF document text
    • http://files.qualityonehvac.com/uploads/1/3/2/7/132740234/c258c.pdfIn PDF document text
    • http://files.qristara.com/uploads/1/3/1/6/131607407/8480675.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/1/0430/1655/2605/files/valpakine_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6396/5861/files/32982971199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9603/9839/files/gutukan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3577/0532/files/88046391875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5988/5733/files/zotut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/74499622341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4156/2522/files/28480799620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/25369625407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7797/4678/files/giwilenukazalolunuxej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/49784677121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/23059295447.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 3

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_off00006e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3C 5316 bytes
SHA-256: 0d71be2f1b59439909fce8ad7953553b0fb5e35381fb0cba85d9a1de2041bf6f
font_01_sfnt_off0000805a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x805A 10324 bytes
SHA-256: 871ff05de8f874f8b0c7f60197476035c8970af11d6cf790a9e3bd5d9673d6e9

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