Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4e8a937fda4b239…

MALICIOUS

PDF

41.6 KB Created: 2020-08-18 17:57:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e23a40f7935a179bbf8813bed516889 SHA-1: e497dda7adc47e06398352de4ba96ad1ff47005e SHA-256: f4e8a937fda4b2396e4f30fc48bd047c43b050f9758272bb7196e4b8b60c2c71
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many hosted on Shopify, designed to appear as legitimate documents. One prominent link, 'https://ttraff.ru/pify?keyword=bernette+340+deco+file+format', leads to a known malicious redirector. The document body, though heavily obfuscated, contains this malicious URL and other benign-looking URLs, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure.

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=bernette+340+deco+file+format In PDF document text
    • http://dovif.leluxhomescents.com/uploads/1/3/2/7/132712354/321a8.pdfIn PDF document text
    • http://files.tewksburybaptists.org/uploads/1/3/2/7/132711975/22d93687114.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/1/0428/3462/4679/files/lesukokivinoxolar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3313/2193/files/zavojonukorux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1870/6341/files/47045902914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/assembly_language_programming_8086_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6102/6719/files/komerevinal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6082/9087/files/dmv_nj_practice_test_500_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1096/5147/files/torujanadusubarasojulul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7210/8197/files/10994391434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/gatiwakitabibajenotifujal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/bootstrap_shopping_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7921/8838/files/insect_encyclopedia_with_pictures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4326/5434/files/65546264482.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_off00006380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6380 5432 bytes
SHA-256: c394bdb2d9e260a0738356d696afa75bd1b39db1c045b68b519f4488ee0658d8
font_01_sfnt_off000075ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75EA 10428 bytes
SHA-256: 65f7e6c08671fd127a9a11899769ee80886f3dc4fa9b0281d2b1bd6810da2926

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