Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ddd56bd0088948e…

MALICIOUS

PDF

41.5 KB Created: 2020-09-10 16:49:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38f5945d381d2ad61974c9927fb9b698 SHA-1: eefa1477f8518814cc28c015b016caf81bc314c1 SHA-256: 7ddd56bd0088948eb315112b3d5e0bb9c9516615b6d2dfb9c3a275727d295077
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service (ttraff.club) that is flagged as malicious. The document body and heuristics indicate a link farm designed to drive traffic to potentially malicious sites, likely for phishing or malware delivery. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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.club/wix?keyword=loan+amortization+table+template In PDF document text
    • http://files.tiered-educational-consulting.com/uploads/1/3/0/9/130969893/zurarozexanotijerax.pdfIn PDF document text
    • http://maxazoj.makeupbysarahe.com/uploads/1/3/1/1/131164250/gesuleninom.pdfIn PDF document text
    • http://files.coffsharbourroofing.com/uploads/1/3/1/3/131398605/3727926.pdfIn PDF document text
    • http://zonato.riversidecarriagecompany.com/uploads/1/3/1/4/131453648/lidaxeveleb.pdfIn PDF document text
    • http://tegopem.grangerlandrfd.com/uploads/1/3/2/7/132741100/43a2b5bff.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/1/0433/7179/0494/files/rikumajatipibejed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1725/4558/files/netter_anatomy_coloring_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/juxanoxuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7231/3751/files/fuvebojaganovigogaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/bobegabeluvosuvowupaxikuw.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/90661f_22c292e8735641b7a1edaab9f215a200.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4dd980_62ceb5cca600496e840f4a2d0f086971.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3c9ac1_2dec7a5e266c465287819f98a29f6be4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/191a6d_85a9fed8785b47229c058207e974b871.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/338562_3630e54ef82c4f0da75a87536d557d3c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/98d639_dc8feaf8a6884304b124889cf26323a0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8cbfce_169b98c57c0842d9b6864fb408d6e832.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DC 4916 bytes
SHA-256: be8d831c8ad4faf6b0bf9fd57ec9842135244a89ad29d3c03a6d643a0ea5f66a
font_01_sfnt_off00007586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7586 10424 bytes
SHA-256: 2fae6e0d2daaf3f64faffc3418b66c16421e3a5a555a911d73bb9abe1e7798e5