Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6c5b7eb686429a…

MALICIOUS

PDF

53.4 KB Created: 2020-07-31 01:46:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53c9e09d48b412accec6277e7de5d2e9 SHA-1: 200907c82c1a794c5f3dd84a8195b751e36dda48 SHA-256: 7d6c5b7eb686429a02e2393d84d6676327ddbcac672f82f84ee64a4f87cc94b7
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create an SEO link farm, masquerading as legitimate content. The primary redirector URL, 'https://ttraff.cc/wb?keyword=english%20vocabulary%20house%20furniture%20pdf', is flagged as malicious, indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.

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=english%20vocabulary%20house%20furniture%20pdf In PDF document text
    • http://files.lyndonstatesga.com/uploads/1/3/2/7/132712324/fejotugenifa-watikizar.pdfIn PDF document text
    • http://files.funtastic101.co.uk/uploads/1/3/2/7/132740949/luvopomuvusi_dumobuvakujet_lotudupenu.pdfIn PDF document text
    • http://files.carolhealy.com/uploads/1/3/0/9/130969080/4a8b8.pdfIn PDF document text
    • http://files.childrensliteratureassembly.com/uploads/1/3/1/3/131383297/rovefisixibopefuj.pdfIn PDF document text
    • http://files.thebeamtravel.com/uploads/1/3/1/4/131406140/mexudowaforujav.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/1/0431/7921/2959/files/32380088096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6745/5128/files/10153476855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/30958880126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/40845238494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/juvedazogevokidabedim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4477/2759/files/rujobudidama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5820/0729/files/lokewufozazeloki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/82272796201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/fetorupobotoridukewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/gobagojas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/39258271266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/fovikazave.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 8

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_off000092f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92F9 5560 bytes
SHA-256: a4123d7203d0c47a33f7e4bc37bd359deb4d37eaaa61a6fdc9a57d7f57eb8a8b
font_01_sfnt_off0000a5d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5D8 10088 bytes
SHA-256: 51df8c7f65ec2c715e6b9363cd1f6ec24a206e1f79aab2e40ea0efbd82f6f424

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