Malicious PDF — malware analysis report

Static analysis result for SHA-256 55984969afdb1bae…

MALICIOUS

PDF

65.2 KB Created: 2020-08-24 17:19:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a425fb4733a5dd76a3a4a793a1686d73 SHA-1: 8df6a384745cb513bbf90567764a2ea35186e848 SHA-256: 55984969afdb1bae488dbc44b4b25b8556f27b8e7564fc3b8b3d0d9d2b62e73d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates an attempt to redirect the user to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, many hosted on 'cdn.shopify.com'. The document body, though partially corrupted, contains text related to medical guidelines, likely serving as a lure.

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=sessile+serrated+adenoma+surveillance+guidelines In PDF document text
    • http://files.hullabaloomusicfestival.com/uploads/1/3/2/7/132740415/zikomigop.pdfIn PDF document text
    • http://files.ursulawestwood.com/uploads/1/3/1/3/131379510/vuwuxet.pdfIn PDF document text
    • http://files.holisticpt.org/uploads/1/3/1/0/131070792/46341fec47deb7.pdfIn PDF document text
    • http://tuzus.lakecountyrecovers.com/uploads/1/3/0/8/130814535/medudur.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/1/0427/7701/8524/files/82687773996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2950/3901/files/wesulubupuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7624/7971/files/34559335631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1350/4156/files/jopatejifana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2539/9971/files/nice_guideline_heart_failure_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/gaberojuvosikilotam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4231/2085/files/introduction_to_accounting_and_financial_statements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/vonugotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6133/6471/files/74027478554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3240/4380/files/59748853525.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_off0000b5ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5CE 5420 bytes
SHA-256: 0efcc7af28bd3d443b36a1a86d01681f63fc84c6c604d7577c8824e5d7a5b258
font_01_sfnt_off0000c819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC819 15052 bytes
SHA-256: 04efb557b925d8cf3d1bc12ee4bd11ede0724966b7c931351dd6e04a9fe256ec

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