Malicious PDF — malware analysis report

Static analysis result for SHA-256 52fe27dc5b299d4a…

MALICIOUS

PDF

43.3 KB Created: 2020-08-09 01:35:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e50069e67017363116d8ae086458e1a4 SHA-1: bbe52b5f40241fa9a72617ae5d8ce3543c1ff5da SHA-256: 52fe27dc5b299d4a6e2b007ae6ad6cf1fd3406b34ff0d9ad4048a271692e2d6b
194 Risk Score

Malware Insights

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

The PDF contains embedded links, with one critical heuristic firing indicating it leads to a known malicious redirector. The document body, though partially corrupted, includes text suggesting a lure related to 'trigeminal neuralgia management pdf' and the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=trigeminal+neuralgia+management+pdf In PDF document text
    • http://files.meredithlubowphd.com/uploads/1/3/1/3/131379343/757636.pdfIn PDF document text
    • http://files.pdlphotography.com/uploads/1/3/2/8/132814241/zizusigonoxe.pdfIn PDF document text
    • http://files.canalsigling.com/uploads/1/3/1/3/131383018/8717392.pdfIn PDF document text
    • http://files.rathbeaghfarmhouse.com/uploads/1/3/1/4/131438313/jofamubosonojofeduzi.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/1/0429/2381/9164/files/59004432232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3077/2902/files/xujuwifunozudutuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9480/2581/files/affinits_lectives_goethe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7395/2158/files/affairscloud_february_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2668/4824/files/discord_css_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/duwaxufezemurogagur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/gozujarexaxan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4658/3976/files/11492854654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/kerasabinopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7670/4669/files/biblioteconomia_libro.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_off00006d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3F 5132 bytes
SHA-256: 71ac0113881e1d61f4d2f13aa9645e91e89debe0010d3e68e7e85aec42162e8a
font_01_sfnt_off00007e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9F 9876 bytes
SHA-256: 0d3ef467fb33564799b68350ef069131378b8dad6fcbdfc40ba2782abc66e4ab

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