Malicious PDF — malware analysis report

Static analysis result for SHA-256 13e17f288b7f0d11…

MALICIOUS

PDF

42.7 KB Created: 2020-08-14 04:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ae7985925367e015ae4731ae3c0a53a SHA-1: 5c2df4fd2561ddcdcf1cd1310eb81b6954f32648 SHA-256: 13e17f288b7f0d11d0c1b8adf82bf832bbd18f8af09999ed6b769b5729e52923
194 Risk Score

Malware Insights

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

The PDF document contains numerous links designed to appear as legitimate content but redirect to a malicious SEO link farm, specifically `https://ttraff.ru/wb?keyword=dental%20instruments%20names%20and%20pictures%20pdf`. This indicates a phishing or scam attempt, likely using the document as a lure to drive traffic to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=dental%20instruments%20names%20and%20pictures%20pdf In PDF document text
    • http://faweweni.eusebiachurch.com/uploads/1/3/1/4/131437792/c047fa47.pdfIn PDF document text
    • http://files.waggawaggaprobus.waggamatters.com/uploads/1/3/2/6/132683330/zigebegadub_sovezufudi.pdfIn PDF document text
    • http://files.compasswellnesscoaching.com/uploads/1/3/0/8/130874543/1997618.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/1/0427/6148/6503/files/rexevon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/16393652430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/25967616736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9586/8067/files/9558822688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/74177619547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3697/8850/files/tanatologia_medico_forense.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/elemento_quimico_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8962/3208/files/29490002609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/8856256346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7497/1798/files/rational_functions_and_asymptotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/the_natural_history_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8468/5220/files/country_code_222.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 5

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_off00006776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6776 5300 bytes
SHA-256: 7ab64287ada6b3b62ebf8eff70405125d3f58cd4f29cb9a87d316b19b7ce722d
font_01_sfnt_off00007961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7961 11072 bytes
SHA-256: f78c64cc2d7b0a172a36d9641b945a5b19dd6a414795e7076e94875e1c137c42

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