Malicious PDF — malware analysis report

Static analysis result for SHA-256 78c02b14c32e1a16…

MALICIOUS

PDF

53.6 KB Created: 2020-08-08 05:23:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5adfb457d15f0e6ff2818d1781580f5d SHA-1: 5fa6fcb4c5ff034fdba78faa0174e561d966e6de SHA-256: 78c02b14c32e1a1602705cffe49c04e03cd4cdbcfd35880eb8a63c3d6e2add04
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 URL associated with malicious activity. The document body, though obfuscated, contains a reference to the redirector URL, suggesting an attempt to disguise malicious links as educational content. The presence of a large number of external links, including those to a redirector, indicates 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.cc/wb?keyword=tectonic%20plate%20boundaries%20worksheet%20answers In PDF document text
    • http://files.sokoloffglass.com/uploads/1/3/0/8/130814192/a1aff68f299e.pdfIn PDF document text
    • http://files.meganlittlejohnfoundation.org/uploads/1/3/1/3/131379409/52973df2a0d354.pdfIn PDF document text
    • http://files.masteryourchess.com/uploads/1/3/1/3/131381363/0a7e9c6d48d523b.pdfIn PDF document text
    • http://files.jenniferbiedermannjewelry.com/uploads/1/3/1/3/131380288/gadupadupowonar.pdfIn PDF document text
    • http://files.writersanctuary.net/uploads/1/3/0/7/130739776/teladadapegano_xilovapikupolir_zujumima.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/1/0431/4189/0208/files/install_atom_for_macos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0482/8580/files/yoga_poses_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/gojesuseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9468/7400/files/95230206619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/7793/8855/files/autonomous_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/borex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9564/5589/files/kubumegasirexovoxano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/35844358264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5868/3294/files/autophagy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0490/8952/files/minecraft_enchantment_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4494/4542/files/nys_45_forms.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_off000093a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93A1 5404 bytes
SHA-256: 96e2a5eb089dc7c658d054ed54fd9e1d230ec7c04861ed243b83ea7cb71ffaff
font_01_sfnt_off0000a607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA607 10424 bytes
SHA-256: c8526ee8d0237ab2f63c63555383eec5cf6f8713b13e3d3a44d3ff4bd67825a1

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