Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa3597acde31afe…

MALICIOUS

PDF

47.1 KB Created: 2020-08-21 20:49:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 520254ce49ebc8768ca81e0d733c522c SHA-1: b9f49009d52244ae9d1ec63b1751f1e33fd4c851 SHA-256: 5fa3597acde31afe53b16f48e269fd37e7a8c03af1d39f5d7f334dcf30cda067
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a malicious domain, identified as a redirector for SEO-based phishing. The document body and heuristics indicate a lure for free downloads, likely leading to malware. Although no scripts were explicitly extracted, the PDF structure and malicious links suggest an attempt to download a second-stage payload.

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=migratory+beekeeping+ielts+mentor+answers In PDF document text
    • http://files.niwawriters.com/uploads/1/3/0/7/130740316/lewuwajuwe.pdfIn PDF document text
    • http://files.tubmannaturecenter.org/uploads/1/3/1/3/131398117/molam_rosob_fapisijul_wobul.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/1/0428/9835/8432/files/89647405972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9593/2584/files/83537836258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/nopigofewomixilozoxerujer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4381/4560/files/joreluxezuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/find_accident_report_florida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/raxepube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/day_of_the_dead_skull_coloring_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7692/5078/files/certificato_anamnestico_medico_curante.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3595/1257/files/21178035131.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_off00007205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7205 5540 bytes
SHA-256: 03a8bbca1ac29eb50e8bf81d0dc7d293bf9d9b42630c2de78302b7f6025da0c4
font_01_sfnt_off000084f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F3 13548 bytes
SHA-256: f981ea7d45090c4a22da53c0e9473952f94ccb58e1b98a0632e7879b9dd29875

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