Malicious PDF — malware analysis report

Static analysis result for SHA-256 041eb415b5f9f114…

MALICIOUS

PDF

44.7 KB Created: 2020-08-15 08:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 84b3b2850fc6846099751427d0983f01 SHA-1: b332c8dd82e000b9ef8137591ed1610348f7de4b SHA-256: 041eb415b5f9f114efd98e8b17186e07e34a877e39cb8c56f0e79697a4ad1c83
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=polisemia%20homonimia%20ejercicios%20pdf In PDF document text
    • http://files.imperialcoinsinv.co.uk/uploads/1/3/1/8/131856129/kixuton-ginilapanidadip.pdfIn PDF document text
    • http://files.popswoodencreations.com/uploads/1/3/1/3/131398235/36c748682b45.pdfIn PDF document text
    • http://files.drderickclinic.com/uploads/1/3/1/4/131406173/nidosuguro-tovakamaxije-niwekukaf-rekap.pdfIn PDF document text
    • http://bixedav.creammedia.co.uk/uploads/1/3/0/9/130969873/kujexelivajorubovope.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/1/0430/7222/5442/files/43669331649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/google_form_responses_to_multiple_emails.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8548/6485/files/wotetudibosivumosoxawomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/risuxizajirufarumaxefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/59094624257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/57835996233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2478/5319/files/lagadekalukafazimelij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8502/7745/files/chrysler_300_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3825/files/cen_tech_digital_multimeter_p37772_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7002/1014/files/62335857934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/blank_avery_5195_label_template.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 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_off00006ca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA5 5472 bytes
SHA-256: 00f2e580b2af15fe92b05d3d31d29730710f9d13a55893b708bf33d13028954a
font_01_sfnt_off00007f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1D 11588 bytes
SHA-256: d4fbb32d3f838655b9e7dcbd085eb3a02bc4453e71780dfbed94d81de625c2d7

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