Malicious PDF — malware analysis report

Static analysis result for SHA-256 7238b1319837e441…

MALICIOUS

PDF

39.0 KB Created: 2020-08-13 09:33:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 37d56a7da74bdac075c86f89c11ac849 SHA-1: 339bb67c6966aa8c0e9ef40610ca2fec0a0916c3 SHA-256: 7238b1319837e441eac3d5510c097a88d3b61be4bedafa6b9d41ddc9f861dc51
194 Risk Score

Malware Insights

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

The PDF contains embedded links, including a critical redirector link to 'ttraff.com', suggesting a phishing or malware distribution attempt. The document body, though obfuscated, contains text related to 'Prueba de la catalasa pdf' and the authoring application 'wkhtmltopdf', indicating a lure. The presence of numerous external PDF links, many pointing to Shopify, further supports the SEO link farm tactic for traffic redirection.

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/wb?keyword=prueba%20de%20la%20catalasa%20pdf In PDF document text
    • http://files.doggydilemmas.co/uploads/1/3/1/3/131383771/510bbb9890.pdfIn PDF document text
    • http://files.marcwortmanbooks.com/uploads/1/3/1/4/131407089/d0e29dc6c78.pdfIn PDF document text
    • http://files.appletreecontractors.com/uploads/1/3/1/6/131607712/9709263.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/1/0438/6642/3456/files/tadulibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/lemigenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4459/1000/files/dusananejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/46582366806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/98165731327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2460/files/notifefow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/miragifus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1464/2074/files/principios_da_administrao_financeira_livro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8601/5640/files/alchemy_rory_sutherland.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_off00005848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5848 5288 bytes
SHA-256: 39b98b6526c9975c51065e3ab953c6f8deecc988e5699d58ddfb21aaf4e00533
font_01_sfnt_off00006a41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A41 10992 bytes
SHA-256: 30b4ede5bff8020b5325d4b6c025571640d8f769ea96f9aa37d0f9887d2921d2

Open this report in the interactive analyzer, or submit your own file for analysis.