Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d4de03ac1687e0…

MALICIOUS

PDF

37.8 KB Created: 2020-08-16 21:17:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8916b0b6bdbfd9cac16d1ea47fdd537 SHA-1: 75fbdca32a8e34a7bd1a7557dd58d6b338afce62 SHA-256: 00d4de03ac1687e034f91008609a2470ca8af928a878f7bf828f8b157fb81d21
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, masquerading as an educational worksheet. The ML classifier strongly indicates maliciousness, and the presence of numerous links suggests a link farm or phishing attempt. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/pify?keyword=evidence+of+evolution+lab+worksheet In PDF document text
    • http://files.lunanguyen.com/uploads/1/3/1/4/131454345/nopizo.pdfIn PDF document text
    • http://votibip.davidtaylorphotographer.com/uploads/1/3/1/4/131407241/9c257.pdfIn PDF document text
    • http://files.suzannewales.com/uploads/1/3/0/7/130776864/zagukemuwigeposugoz.pdfIn PDF document text
    • http://files.martincashsculpture.com/uploads/1/3/1/0/131070113/7250124.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6670/3516/files/36620557655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/5578695879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8234/0770/files/table_saw_workstation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/guzupitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8288/1947/files/7905056633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0504/1051/files/sintomas_de_anemia_megaloblastica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/81169914777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/sikofob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7633/7318/files/jupasud.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49AD 5304 bytes
SHA-256: 5d425bc17ede3125bd283e61ab114a6425b13b4cac3886754d4adfdfad9ff8bd
font_01_sfnt_off00005bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB6 9632 bytes
SHA-256: 7535745894a878991206b50562a0b41456b1ad0d1788cdd92b2b3d6f4050d6d1
font_02_sfnt_off00007c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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