Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9fa2178f5ede860…

MALICIOUS

PDF

42.3 KB Created: 2020-08-11 14:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 911550598333d88549419fa2af03391f SHA-1: bef789f08b35a518803ffa178dd2318edeed4aeb SHA-256: b9fa2178f5ede8602cc83b0703c1f0a54f628d016629aafc2a33429ff8192fe9
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests the PDF is designed to lead users to malicious content via a link farm.

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.com/wb?keyword=deming%20out%20of%20the%20crisis%20pdf In PDF document text
    • http://files.corsettiparalegal.com/uploads/1/3/1/8/131857419/b1385f01279c40e.pdfIn PDF document text
    • http://xajam.firstfridayswinnipeg.org/uploads/1/3/0/7/130775403/titetodutinexomop.pdfIn PDF document text
    • http://files.reefglass.com/uploads/1/3/1/3/131384281/8211095.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/1/0428/1312/8871/files/norajas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/56862378212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/3312/9123/files/administracion_de_empresas_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32296476761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2870/0571/files/encyclopdie_visuelle_des_plantes_sauvages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8198/1347/files/vilivitot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/dimazigokepava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/4154277846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2709/5967/files/komofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/measuring_and_monitoring_biological_diversity_standard_methods_for_amphibians.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/mullard_circuits_audio_amplifiers.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
🗂 Part of campaign: billmitchellcreative.com 4 samples

Related samples 5

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_off000067ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EF 5324 bytes
SHA-256: 4d33772f33b542b3d1e8fe0f4536a68abed9e8b4a866c1cc01084813ea4ffd45
font_01_sfnt_off000079ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EC 10280 bytes
SHA-256: d8233819611628250a4d13ec4c95e014aa4ef7683848b86f86087a5f93a3d294

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