Malicious PDF — malware analysis report

Static analysis result for SHA-256 66028d71bb904090…

MALICIOUS

PDF

42.9 KB Created: 2020-08-05 17:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e3a3ac66eee344108fc28c6667fc491 SHA-1: 7d87605113a39c72516814cfa5c58983f4b899c1 SHA-256: 66028d71bb9040901ec1427ede80b1cd9ce6fb8d9fe966294b93fd78bb3cdb48
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body itself contains a URL that also leads to this redirector, suggesting a phishing or scam attempt to lure users to malicious sites. 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.ru/pify?keyword=niche+sites+with+affiliate+marketing+for+beginners+pdf In PDF document text
    • http://files.nancymaldonado.com/uploads/1/3/0/8/130874110/rafaruke_xujuxuwep.pdfIn PDF document text
    • http://files.lifewithpetsgci.com/uploads/1/3/1/3/131380480/nasitawomekefaforepo.pdfIn PDF document text
    • http://files.froggyplaces.net/uploads/1/3/1/8/131857758/wazubipagatu.pdfIn PDF document text
    • http://files.mod-el.org/uploads/1/3/1/4/131453990/lelajud.pdfIn PDF document text
    • http://files.wildapplesfloral.com/uploads/1/3/0/7/130738554/3728160.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/1/0433/9033/7189/files/scrambled_sentences_worksheets_4th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/kayla_itsines_guides_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/57828061425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8771/4721/files/tivuzanaruvovitogilejev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/finor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/lafomemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6870/0310/files/mistweaver_monk_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8515/9843/files/71938701522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/volodos_rachmaninoff_cello_sonata_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/15296650220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4800/8866/files/lubilelenin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/gidugef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1464/2070/files/pefikadidokakigusogo.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_off00006700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6700 5836 bytes
SHA-256: 5bf47faf59b9fbb93af131c4cb9cd7b21d402e626bab47283ae70a7374662be1
font_01_sfnt_off00007acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACD 10412 bytes
SHA-256: dafb537457aedc3aee11264c1be1ee1a377cb8cad34b58dc2ffc1f6a5861c16b

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