Malicious PDF — malware analysis report

Static analysis result for SHA-256 93166d56091cf539…

MALICIOUS

PDF

41.8 KB Created: 2020-08-13 11:25:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5e00d708269afda854dbaf090b78819 SHA-1: f86477b3704ddbbffe5f5e17a860c0aa89299845 SHA-256: 93166d56091cf539010e0d204e3fc07a438d8b4b39ef0a7d151e1cef5ed6423f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.cc'. The document body, though partially corrupted, contains text related to PDF to JPG conversion and the malicious URL, suggesting a social engineering lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for the malicious redirector. No scripts were extracted from this sample.

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.cc/wb?keyword=how%20to%20convert%20pdf%20to%20jpg%20on%20pc In PDF document text
    • http://files.bookcellarlwonline.com/uploads/1/3/1/8/131860787/xejapami.pdfIn PDF document text
    • http://files.rmahelena.com/uploads/1/3/0/8/130874192/7f06b.pdfIn PDF document text
    • http://jejuwuwas.osatelegraph.org/uploads/1/3/1/3/131383790/fibatofomu-viloko-dinexogazab-kejip.pdfIn PDF document text
    • http://files.divinedesigning.org/uploads/1/3/1/0/131070846/zopudezesujezowobos.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/1/0434/4204/5090/files/nilefisuvawixaruxezozos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7833/6166/files/metric_bolt_dimensions_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/45852352401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/ratekitoguzebipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5308/0985/files/jefujotim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6803/8049/files/kikozajeravuluv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/9130/1286/files/bsc_math_notes_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/dadekisopoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5543/1323/files/attendance_management_system_project_in_java_with_source_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/73448593063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9994/5112/files/loop_expressions_after_effects.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_off00006632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6632 5092 bytes
SHA-256: daa5d5c9c8124fe79ab20b8da90f958b4518d68f359cc5ea74010f955c6c8bf6
font_01_sfnt_off000077b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B1 10084 bytes
SHA-256: 0144a11d24c29954ac00a32f45ef65f0f2fabb6bd93334dd0bef9eacb7998b87

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