Malicious PDF — malware analysis report

Static analysis result for SHA-256 6615ba402371536b…

MALICIOUS

PDF

56.5 KB Created: 2020-08-12 05:28:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e2580b9b1a20d99b32ae5e15d3fe6bf SHA-1: 35fc312f4f57c2734657034f15d12d2df1681c86 SHA-256: 6615ba402371536bdc2d80c91f2e9335520c28b13914ad42ad7e94583748f357
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to SEO-optimized PDF hosting sites, designed to appear as legitimate documents. One prominent link redirects to `https://ttraff.ru/wb?keyword=antithrombotic%20therapy%20for%20vte%20disease%20chest%20guideline%20pdf`, which is identified as malicious redirector infrastructure. This suggests a phishing or scam campaign aiming to drive traffic to malicious sites, likely for further exploitation or malware delivery.

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.ru/wb?keyword=antithrombotic%20therapy%20for%20vte%20disease%20chest%20guideline%20pdf In PDF document text
    • http://fuxone.jackandwinn.com/uploads/1/3/0/8/130874566/gasewa_zegepefan.pdfIn PDF document text
    • http://files.hermitthrushhomestead.com/uploads/1/3/1/4/131438718/4fc7b3c010b279.pdfIn PDF document text
    • http://zegiduri.higherlivingnetwork.com/uploads/1/3/0/9/130969130/62eecd.pdfIn PDF document text
    • http://files.guide2tech4teachers.com/uploads/1/3/2/6/132695517/96f6c35723c.pdfIn PDF document text
    • http://files.dptrackandfield.org/uploads/1/3/1/3/131398117/b31adad475303.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/1/0431/2639/0946/files/mukobenoluwisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/manual_windshield_wiper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3164/1762/files/89409360145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6980/9564/files/39758060999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2801/3475/files/nuvapinimemuluzosorux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/depusulolunifanilux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9735/0554/files/21813391589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3290/3833/files/jujilofidafepubifanuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2062/2756/files/catholic_study_bible.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5064/5157/files/79509239719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/5e_paladin_guide.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_off000099fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99FE 5860 bytes
SHA-256: 11c2ad1caae8e9209ff2de23a9b92859eb571ae74ddc82fbac42fcf05677c6d0
font_01_sfnt_off0000adc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADC8 11988 bytes
SHA-256: 24ae1e7f40ee7ef1c63bb7fef9b099145875c7285df8d0f5e51b103cef2ac319

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