Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9b84279b9790ddd…

MALICIOUS

PDF

38.1 KB Created: 2020-08-24 01:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e057d9e146b2aac68e49f6b1bd9f1e24 SHA-1: eccdf8978c068ccda650badbae2a19c3ae29149b SHA-256: b9b84279b9790ddddfd0216a6ce88651121126607741c9bf8544cb511bba7a6f
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=logitech+m535+bluetooth+mouse, which is likely used for redirection. While the document body contains garbled text, the presence of numerous links, including one to a potentially malicious redirector, indicates a malicious intent, possibly for SEO manipulation or user redirection.

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=logitech+m535+bluetooth+mouse In PDF document text
    • http://files.phelpsmuseum.com/uploads/1/3/0/7/130739525/4770384.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/1/0440/7685/9557/files/vidmate_old_2017_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3581/9173/files/isometric_drawing_in_autocad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/49508798148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5289/1298/files/83078171431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/list_of_filmfare_awards_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5221/9030/files/bartolome_de_las_casas_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0871/1080/files/ralituliruwoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7578/7169/files/ownership_structure_and_financial_performance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0209/3987/files/hypertension_fact_sheet_cdc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9096/7714/files/95012450872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/33850146170.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 2

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_off0000554b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x554B 5276 bytes
SHA-256: df52086112c28eec872d0493ee0c5b650c74c6b94eed975f56e994cebcb1c7d9
font_01_sfnt_off00006737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6737 11140 bytes
SHA-256: 353a518f658f3d5ba71db6d55363026b4d4faf04cd5ea6277193929f23528106

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