Malicious PDF — malware analysis report

Static analysis result for SHA-256 3473e6cd220c32c7…

MALICIOUS

PDF

42.9 KB Created: 2020-08-15 10:40:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba9181c72fdc93b89975f0cfc065bf7f SHA-1: 4b1da31a66c13d16d4f8126018c4bd69c20b686d SHA-256: 3473e6cd220c32c7cd5345ffd9a753ffa0557e12f01db953d6d25166127e2822
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a document about leptospirosis treatment in dogs. The document body and heuristics indicate a link farm strategy, with numerous links pointing to Shopify-hosted PDFs, likely to improve search engine ranking and distribute the malicious redirector. No scripts were extracted from this sample.

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=leptospirosis%20en%20perros%20tratamiento%20pdf In PDF document text
    • http://files.warwickvalleywrestling.com/uploads/1/3/0/8/130874526/nowiwuwusunev-wixetukezubadi-telajaxewabume-dovidog.pdfIn PDF document text
    • http://files.reclaiminghopecounseling.com/uploads/1/3/1/3/131384555/koxejizuzagu.pdfIn PDF document text
    • http://files.hiphopandhomeruns.com/uploads/1/3/1/4/131437977/9731066.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/1/0433/5511/1589/files/99924688501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4388/7016/files/73955505575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3537/3213/files/phonetic_symbols_with_examples_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9786/3832/files/75409472363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3493/3408/files/guwuliwuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/pabiwilalinogasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/vifukufimizudizeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/hidden_street_maplestory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7408/3233/files/xokajav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6308/3162/files/pabefepawotawumatuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/lojapizuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/99063568319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/lofezoxuxasafemediwuvi.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_off00006a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3B 5096 bytes
SHA-256: 46ddf1a4a8165b8e5f627e8f136800491de35fe05f7066403a2bb4e4e4c13c09
font_01_sfnt_off00007b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7A 10724 bytes
SHA-256: 89b7df1b2defc1fe12d30452d2d3622f00bd51e1a8afaa80a34adbb0f9c848c7

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