Malicious PDF — malware analysis report

Static analysis result for SHA-256 331fd49091c38d4a…

MALICIOUS

PDF

65.5 KB Created: 2020-08-05 07:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92dc50d49cced20326483d5c74d60ed4 SHA-1: 39eefdd1d05b03765ebb0206a2ccee98808e8ab3 SHA-256: 331fd49091c38d4a9173ec73aea15970a4048463acd5beece80fcbbca17cb4a9
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=working+environment+definition+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct payload execution.

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=working+environment+definition+pdf In PDF document text
    • http://files.wheeloffortuneranch.com/uploads/1/3/1/4/131437969/penop_jusevezad_palemoregoxil_wefotezifutavax.pdfIn PDF document text
    • http://files.phoenixunionindoor.org/uploads/1/3/1/3/131382243/3345855.pdfIn PDF document text
    • http://files.hanleyvoices.org/uploads/1/3/2/6/132681194/f8870d0ec.pdfIn PDF document text
    • http://laneves.bearcreekfrenchies.com/uploads/1/3/1/3/131383791/7344864.pdfIn PDF document text
    • http://files.littlebunsinc.com/uploads/1/3/0/7/130738970/sezonexokusutenu.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/1/0433/6635/0998/files/wunutarexeralaposized.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2990/2998/files/zatuladigaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/63656639835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6430/3522/files/87755553478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/zarokarur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/95439586947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5322/6913/files/basel_3_lcr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/lubep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/4729434684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6471/2616/files/xuwaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/strongsville_ohio_zip_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/53436195199.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 6

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_off0000c283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC283 5080 bytes
SHA-256: e4ed3cc7fcdc7cafb1f293463593841a0f9c5e910120debdaf6aa4eeee071107
font_01_sfnt_off0000d3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D5 10876 bytes
SHA-256: a96c9a47cfcbe417b7bd10621f966f6f223808886d961281564267587d9785e7

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