Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8f48214f9f08024…

MALICIOUS

PDF

39.6 KB Created: 2020-08-17 10:23:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d48036baa3c9724ee1d757eb836687c SHA-1: a4bf199b02cf90fa3e1db91f8a325ff970fd841c SHA-256: d8f48214f9f080240015f5d1e2f9179e8f4dbd6422df9fef960bee29cd2286ce
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=charcot+foot+deformity+images', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a link farm and a malicious redirector indicates an attempt to lure users to malicious sites.

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.ru/pify?keyword=charcot+foot+deformity+images In PDF document text
    • http://files.martykanova.com/uploads/1/3/0/7/130738836/7724436.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/1/0429/7064/4631/files/financial_accounting_in_tally_erp_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1634/7035/files/definition_of_authoritarianism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3986/7559/files/natazezenumufujedapez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/89407056510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9691/4587/files/cambridge_grade_6_science_past_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/seek._co._nz_cv_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9651/3448/files/42840399601.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_off00005d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1A 5408 bytes
SHA-256: 9b1ea3086bfa690030089bb74173d4c09891f1276b976a336916f680585ac4d2
font_01_sfnt_off00006f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6A 10068 bytes
SHA-256: b058493f5218153f98ef72a2dbd2627ceac39532156fbf112dd172049d0cf4f4

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