Malicious PDF — malware analysis report

Static analysis result for SHA-256 80adad5393ebd4ef…

MALICIOUS

PDF

39.2 KB Created: 2020-08-12 13:36:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65148846b86eba0fea24f5c2f6b0d27a SHA-1: 43435573169bef98f699184ed30b49e747506d59 SHA-256: 80adad5393ebd4ef11ca7420926c8d784d40f3e3eb819f91b619c55a8afb9dea
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service identified as malicious. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the PDF is designed to act as a link farm, leading users to malicious sites under the guise of providing PDF documents.

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=invertebrata%20dan%20vertebrata%20pdf In PDF document text
    • http://files.thebird-dogs.com/uploads/1/3/1/4/131453559/080841b4dc28.pdfIn PDF document text
    • http://files.gardenbaptistchurch.net/uploads/1/3/0/7/130738993/napati_nexugak.pdfIn PDF document text
    • http://defis.meaganmichalskirmt.com/uploads/1/3/0/7/130740597/vebexo-rolezurumasefo.pdfIn PDF document text
    • http://files.nataliarybczynski.com/uploads/1/3/1/4/131406659/e3be2a417c3.pdfIn PDF document text
    • http://mabopib.alicekelseylewis.net/uploads/1/3/1/3/131384401/5918040.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/1/0435/5804/3807/files/puxemuzokazoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6395/1003/files/english_to_spanish_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/4692/4451/files/apollo_13_movie_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/go_pro_studio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/migaxeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/92915400469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46946939033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7261/8657/files/audio_score_full_download_full_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0753/1414/files/65172438216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8330/0005/files/92153960722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3651/6250/files/pathology_book_for_dmlt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4112/6565/files/seperusebijariberetilova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7878/5951/files/john_deere_l110_parts_manual.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 4

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_off00005c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6E 4960 bytes
SHA-256: 91c3006cc6d3deba4c5f1f473fb8a4bef26850b3375ace670272cc44d0f3e70d
font_01_sfnt_off00006d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5D 10148 bytes
SHA-256: 5c3b11b135296e2d50783626f00517977725d0422a870e9af71eae83b4ff79a3

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