Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c4d054be65b49f8…

MALICIOUS

PDF

36.5 KB Created: 2020-09-16 19:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0323ed63b16d02bf83deec488874db97 SHA-1: b86d785ad57505fb4e660e7204ead6cfbce02050 SHA-256: 7c4d054be65b49f8e37cb8efb6c7c30d3fbe619a42d99b621c3a5a6139e5bb54
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service, indicating a link farm or phishing campaign. The document body, though partially corrupted, contains the phrase "Rainsford's by design" and a URL that strongly suggests a lure. The presence of PDF-specific heuristics for malicious redirectors and SEO link farms further supports this assessment.

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.link/wix?keyword=rainsford%2527s+by+design In PDF document text
    • http://rorexaw.dixielandbandorlando.com/uploads/1/3/0/8/130874493/1452570.pdfIn PDF document text
    • http://files.tampalandscapedesign.com/uploads/1/3/1/4/131454355/5050ed.pdfIn PDF document text
    • http://files.fortytwomotorsports.com/uploads/1/3/1/6/131607063/mevudafidipev.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/1/0431/5932/2778/files/xulejokivivanonejup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/fikuguvoluradagowofarevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0508/3811/files/tata_bye_bye_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/crossword_answer_for_flat_metal_ring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1461/7250/files/25505839510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9456/3229/files/tonuwewebaluvexat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/lejajokimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0777/4618/files/c_linked_list.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5091 5324 bytes
SHA-256: bd8c8c5ae176c178139c6beee0826eb6cedec7bd2ec66c338fb3abe185608a05
font_01_sfnt_off000062d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D4 10220 bytes
SHA-256: bca4b1b89c48e370421fc90bad78dc11c2f8001ae37d566f624d386858624471

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