Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ec220685403ede…

MALICIOUS

PDF

47.9 KB Created: 2020-08-15 15:23:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1beb6148f076d3680acd7a086458c20e SHA-1: 7703ebe712f63f04c6e8c6f3404d6d64a2862e35 SHA-256: 65ec220685403ede0c64d2d62494af61a45eb6b63e53addbbc9786ed81fb1108
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on domains associated with SEO link farms and redirector infrastructure. The primary malicious link identified, 'https://ttraff.ru/wb?keyword=tumores%20benignos%20y%20malignos%20de%20mama%20pdf', is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious websites, likely for phishing or to download further malware. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious intent.

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=tumores%20benignos%20y%20malignos%20de%20mama%20pdf In PDF document text
    • http://files.awakeningtouch.ca/uploads/1/3/1/8/131856860/04eb8921.pdfIn PDF document text
    • http://files.atelierbe.com/uploads/1/3/0/7/130739596/8227cb1c60082.pdfIn PDF document text
    • http://fusazif.empowerdifferences.com/uploads/1/3/1/4/131453145/1034033.pdfIn PDF document text
    • http://gobafawiw.daveyoong.com/uploads/1/3/0/9/130969723/vegusaj_kemilupolebu_xotonifarokok_tirexoromupavoz.pdfIn PDF document text
    • http://files.scoilsantain.com/uploads/1/3/1/8/131857565/bexejibajumege.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/1/0429/5367/0822/files/cae_listening_part_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5571/8298/files/vawaliveviboxovusumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9656/4131/files/13045937831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/classification_and_regression_trees_leo_breiman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8848/5288/files/fire_emblem_the_binding_blade_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7557/5709/files/52173723175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1747/7019/files/52399822091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/romanesque_and_gothic_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1466/5878/files/common_stocks_and_uncommon_profits_summary.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_off00007b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B35 5552 bytes
SHA-256: 5efc420ebff7fb32e4ef9946821579f5a936a2b2980e95539435ef6da3988d96
font_01_sfnt_off00008dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFF 10644 bytes
SHA-256: fb7acd9ee340a830e9204e7c3415d97de0e0cb6f41c03463cb7df2f73d70016c

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