Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d4eb7c1e9bcebe…

MALICIOUS

PDF

47.2 KB Created: 2020-08-17 10:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b46a6e6b0e1d37d1a1dc176c314b35bd SHA-1: fdb6d4efe16f227fd082b6c354aacfb517b24b77 SHA-256: 82d4eb7c1e9bcebe2edaefb3df3edb3af132489e4212dfa978c616ce6e53bddd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically a link farm designed for SEO manipulation. The primary redirector URL is https://ttraff.cc/pify?keyword=months+of+the+year+in+french+pdf, which is used to lure victims with a seemingly legitimate download. The ML classifier strongly indicates maliciousness, and the presence of numerous external links points to a phishing or scam attempt.

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.cc/pify?keyword=months+of+the+year+in+french+pdf In PDF document text
    • http://files.ceciliabramhallart.com/uploads/1/3/0/7/130738852/fexusoj.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/1/0434/2684/0737/files/rusif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/66387743582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/38907248690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0174/6332/files/statistical_inference_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8042/5370/files/481832512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0069/1866/files/la_campanella_violin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8733/9413/files/50601775498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8191/5804/files/balop.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 3

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_off00007b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9B 5316 bytes
SHA-256: 5f985a8970471cf907e739a58ae0a4000252e92d1c238bcf5aba5cbf51e7d562
font_01_sfnt_off00008db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB9 10184 bytes
SHA-256: 72e589c4979f9392a10b059dbe23384110121618033ce13bbe21dad191e06939

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