Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d3ce9a5376f785f…

MALICIOUS

PDF

46.1 KB Created: 2020-08-03 13:05:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fdb1520ae594626f043c5508baae3716 SHA-1: 26a6f3a4a51668ce9f6d1e157f32a0a010d4b17e SHA-256: 6d3ce9a5376f785fc92ee07a2a81ef0568694edbf7fc8a77724dcb5ead200223
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector URL associated with malicious activity. The document body, though partially corrupted, includes the same redirector URL, suggesting an attempt to disguise its malicious nature. The presence of a link farm heuristic further indicates a coordinated effort to distribute 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/wb?keyword=comment%20envouter%20un%20homme%20avec%20sa%20photo%20pdf In PDF document text
    • http://files.sandyrosswellservicing.com/uploads/1/3/1/4/131411762/zakobumima.pdfIn PDF document text
    • http://files.jawsmechanical.com/uploads/1/3/2/7/132712282/9257191.pdfIn PDF document text
    • http://sokimu.nfpplanning.com/uploads/1/3/0/7/130776728/8570ac9ab3f2.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/1/0431/4313/5393/files/new_zealand_zip_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1378/3199/files/58276649360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/zikusobedoruseje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3427/2163/files/30087180582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7405/0458/files/gugalidefugekasevosabaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/52453900819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/5568663240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9899/5877/files/61540920859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/pegema.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_off0000731b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731B 5328 bytes
SHA-256: a78a43c79655354dcc172aaf64744bb38658d823bc64359ad3fd836faeb9f0a0
font_01_sfnt_off00008512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8512 11756 bytes
SHA-256: 46f18ba7552cd822fb848318c57cea5e56bfffa51be91a3832ba6e5fe318f68b

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