Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea181a3c9a4f0ab…

MALICIOUS

PDF

33.8 KB Created: 2020-08-18 16:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86213512104f7bcf8573ac12353c4d89 SHA-1: f84b5f7715cd8cbd8589d210e11109b69cb06aca SHA-256: 4ea181a3c9a4f0abb86810cb9655ee7c60ef4bd9c2cb91b8d3e0578d1b02567b
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. One of the primary links points to 'ttraff.com', a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to lure users to malicious sites. The presence of a large number of external links, many hosted on Shopify, further supports the attack pattern of a link farm designed for malicious 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.com/pify?keyword=vasant+panchami+hd+images+free In PDF document text
    • http://files.windowwisehereford.com/uploads/1/3/1/0/131070080/2cbeb7981.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/1/0438/4620/5602/files/63200431067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9733/3664/files/piwarawutinewokoxiguji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5426/6533/files/88873432771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/fijejajezexewasojeretu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/46114709243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/88455986077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/48581320530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8436/5476/files/english_alphabets_writing_practice_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/15102476060.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 1

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_off000047c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47C5 5504 bytes
SHA-256: a7aa524a449e0b0088352c1d3e604226c577ae49aa97b0395788adf6e9af6392
font_01_sfnt_off00005a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4D 9504 bytes
SHA-256: 6f770468f9f3ce47a3239446505312e42bc26c69b4364bec4fe3f874800e6267

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