Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4026539b41a1d2…

MALICIOUS

PDF

44.4 KB Created: 2020-08-23 11:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dd251edccbe3bfc3a6c31ff4346671bf SHA-1: b7c8596c5747e38df5eb84e933cdc5160bd0ec2c SHA-256: fe4026539b41a1d2105730dc5ad413eada4ee4a94c7295282a6e6e9a055245a1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a malicious URL, disguised as a Chubb travel insurance claim form. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the redirection to known malicious infrastructure. The PDF also contains a large number of external links, suggesting a link farm for SEO manipulation or to host further malicious content. No scripts were extracted, but the presence of malicious links is sufficient evidence for the attack pattern.

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=chubb+travel+insurance+claim+form+uk In PDF document text
    • http://files.bestdayeverevents.nl/uploads/1/3/1/4/131453539/bisizilitirekime.pdfIn PDF document text
    • http://files.mindmeltgames.com/uploads/1/3/1/4/131453990/5178484.pdfIn PDF document text
    • http://files.thepathclearer.com.au/uploads/1/3/1/3/131379894/7564d18c79927.pdfIn PDF document text
    • http://xunevifup.decoratingwithgrace.com/uploads/1/3/1/0/131070858/9edade8cf.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/1/0428/9318/1095/files/tomb_of_annihilation_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/vifevexibufosunatiworap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0160/1444/files/schistosoma_mekongi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7361/7576/files/queue_implementation_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5300/6494/files/nuzurene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5172/9567/files/16607786115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4337/2699/files/trivium_ember_to_inferno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0006/2371/files/bawatexabogikanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/nfl_week_1_schedule_spreadsheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8975/6311/files/adobe_creative_cloud_update_failed_error.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 8

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_off00006d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D19 5292 bytes
SHA-256: 6d42561bd2381a6df664024586a89be94d8c2e9b44801715d28ea1550856a2e7
font_01_sfnt_off00007ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF1 11108 bytes
SHA-256: adcba56424dc6f09e46d5e6676ff1f7f05e00aae896a4165c04ef813ec8dc95c

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