Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5abc510f316812…

MALICIOUS

PDF

45.9 KB Created: 2020-08-11 08:39:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b94965a41dd527d8ce928946a3592b0 SHA-1: 1bc50a6de525effb585baa02a184eeea3badf3de SHA-256: 7b5abc510f316812060676aaefd712fc12e005c097e42b74b3b649bf986ac91e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to an SEO redirector, which ultimately points to a malicious URL. The document body text, though garbled, includes keywords related to 'Cadbury corporate governance pdf' and the redirector URL, suggesting a phishing or scam lure. 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/pify?keyword=cadbury+corporate+governance+pdf In PDF document text
    • http://files.cottontailcottage.org/uploads/1/3/2/6/132682684/bd037915f2df22d.pdfIn PDF document text
    • http://files.priceycentral.com/uploads/1/3/0/8/130813483/c58c68ee8fea937.pdfIn PDF document text
    • http://files.helentclark.org/uploads/1/3/1/4/131455722/vunuzekosa.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/1/0435/9543/2099/files/130-_u.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/87573477368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9564/5589/files/12859334694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/28047099587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8764/3302/files/kabomafukijonugutotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/30146087096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7086/6076/files/5907968371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9079/5934/files/5300491162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/16352235763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/viwivoxadap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1874/7036/files/tivepaduwitesunifinijexu.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 7

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_off00007669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7669 5320 bytes
SHA-256: aabaf931db1258cab23f56bfe76b37ef7fb906b0d60548e024fd3c9da77c2edf
font_01_sfnt_off0000889f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x889F 9984 bytes
SHA-256: eec703fb8e675d0ddbf2c7cfacaa63efd2d73535a05ff8900b0705249d2d118d

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