Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d7d9898cfa7c60c…

MALICIOUS

PDF

45.5 KB Created: 2020-08-13 22:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8575b9d9433921efcaf03ea25a3abd2 SHA-1: 94779be0f2a095062b55f4059c6ec987b38dba8e SHA-256: 2d7d9898cfa7c60ca5859cf5c3a08c09136d95cc81df3d02e4ce7cd94215a63a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector (https://ttraff.ru/pify?keyword=propiedades+de+los+metales+alcalinoterreos+pdf). The heuristic PDF_SEO_LINK_FARM indicates a mass external PDF link farm, suggesting a SEO poisoning or link farm attack. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves leveraging these links for malicious redirection or SEO manipulation.

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=propiedades+de+los+metales+alcalinoterreos+pdf In PDF document text
    • http://files.peakhealthcaremaryland.com/uploads/1/3/1/4/131406816/rizapisopasiraluzoga.pdfIn PDF document text
    • http://niviruvi.murphyismyagent.com/uploads/1/3/0/9/130969448/binivazo.pdfIn PDF document text
    • http://wetidom.warwickmixedhockey.com/uploads/1/3/2/6/132682156/sabevejarimag.pdfIn PDF document text
    • http://files.langleycyberpatriot.org/uploads/1/3/2/6/132695851/teguvav.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/1/0431/1616/7328/files/79795211630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7945/1289/files/80010190302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/wetarepezuwusod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8751/8104/files/sugepewabepakemovovixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83971047952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0532/8034/files/rivibozede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4916/2654/files/minecraft_puzzle_maps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0493/files/azar_basic_english_grammar_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/metso_gyratory_crusher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2128/7067/files/cocubes_aptitude_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1006/files/auditoria_informatica_de_explotacion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57189589950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9102/4277/files/suxuk.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_off00006f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F99 5300 bytes
SHA-256: d8f529fe2f39af5c1cfa62d7f5efda8e3e575cbca651b4df0ff35ac2a1e109d6
font_01_sfnt_off00008183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8183 12128 bytes
SHA-256: 9d0109350c34966cd8f3e4e7d806d69838abcaa809184d4ab8f369983569d529

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