Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d4bd384e6352f43…

MALICIOUS

PDF

39.1 KB Created: 2020-08-15 01:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0bbc524b2c854d4f5a81e346f9203460 SHA-1: df7de549c86ad33ae58062e10ab0337b026a2318 SHA-256: 3d4bd384e6352f4386cfe679f94aefe49dbff0a9347e50de7360baada8050d62
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many hosted on Shopify, designed to appear as search results. The primary malicious link, https://ttraff.com/wb?keyword=rice%20weevil%20life%20cycle%20pdf, is a redirector likely leading to further malicious content. The document body itself is heavily obfuscated but contains the search term and the malicious redirector URL.

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=rice%20weevil%20life%20cycle%20pdf In PDF document text
    • http://files.nlpedinburgh.co.uk/uploads/1/3/1/1/131164473/2dd2e6a0638b.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/1/0429/9984/0921/files/womug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/campbell_biology_10th_edition_ebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0737/7561/files/types_of_bleeding_disorders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6521/3089/files/63183715083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/assam_budget_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3048/4904/files/iredell_county_sample_ballot_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3583/6059/files/oxford_english_for_cambridge_primary_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/geometrical_interpretation_of_integration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/mathematics_grade_11_textbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4695/9261/files/nintendo_power_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2211/3173/files/acuerdo_de_paris_medio_ambiente.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0504/8989/files/linux_export_command.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 1

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_off00005c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9F 4928 bytes
SHA-256: 4c29659296f7e3bd7e245e35ac9711d5677c98c7c0c9ca5d23cf418465eefc4c
font_01_sfnt_off00006d9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9B 10016 bytes
SHA-256: c6a58d65c8cdee67b5856222fdc81758d3521de6b49a3693d8d815614c93be55

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