Malicious PDF — malware analysis report

Static analysis result for SHA-256 735cea04ba787987…

MALICIOUS

PDF

43.6 KB Created: 2020-08-24 20:12:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25ba4baae15dab1976e593d1641b379a SHA-1: c99fc0a1e08b97f2d0510834615c67dc3360bf87 SHA-256: 735cea04ba78798799d3d2e15d2deedcbcc9d66e40a566b8a2c4e45e20c3afa6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'ttraff.com' domain. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'DBS check address continuation sheet'. The ML classifier strongly indicated maliciousness, and the presence of numerous external links points to a link farm or phishing attempt.

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=dbs+check+address+continuation+sheet In PDF document text
    • http://roguter.warandpeacebuilding.com/uploads/1/3/0/8/130813837/249c7086.pdfIn PDF document text
    • http://files.treeexpertscincinnati.com/uploads/1/3/1/3/131379615/sowidaresijubimegufo.pdfIn PDF document text
    • http://nifudolap.bncnyc.com/uploads/1/3/1/4/131437549/fotebavaroworu-satijetuw.pdfIn PDF document text
    • http://files.holleyslandscaping.com/uploads/1/3/1/0/131070378/44bde646268.pdfIn PDF document text
    • http://jikon.behinddallas.com/uploads/1/3/2/3/132303301/benekubizi-wuderixuvut.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/1/0435/1610/0776/files/caso_clinico_asma_pediatria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lonub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7283/8039/files/zamenasavifewovupumubej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0108/4064/files/91818978369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3972/7509/files/the_thing_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1594/6918/files/throw_some_mo_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kexikebesadunav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2247/files/byzantine_empire_map_worksheet.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_off00006dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD5 5200 bytes
SHA-256: c6afe791030102f9ae5a0640751841bf3f90317d4c712bd98b185173b06c4bfe
font_01_sfnt_off00007f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6D 10112 bytes
SHA-256: 11b042c52a0b2ce14dd1a8ac9a3e5226eb4ea0ef42a59015f98cdc6bf1d1687d

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