Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee8290d6171b03b…

MALICIOUS

PDF

77.3 KB Created: 2021-02-04 05:55:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 82def833e0f1c24a8af0e7b86e6f1221 SHA-1: c948f2cd5d2ef5ee1cf09a0140616847a78f97da SHA-256: 6ee8290d6171b03bff89ef01454d1657973647923c2a12ee9c0a8bda8ef9fa08
196 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, indicating a phishing attempt. It contains a large number of external links, many pointing to SEO-optimized PDF documents, suggesting a link farm designed to distribute further malicious content. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly indicate a phishing or content distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bologen.ru/123?utm_term=blank+printable+general+bill+of+sale PDF link annotation
    • https://cdn.sqhk.co/savageven/eQhgtjC/xajivanerasewumowoditu.pdfIn PDF document text
    • https://cdn.sqhk.co/tamoravuwera/rji1heD/49127474618.pdfIn PDF document text
    • http://ig-soft-team.com/best_free_comedy_movies_on_youtube_202064bj3.pdfIn PDF document text
    • https://cdn.sqhk.co/vifutetax/gKLgdhg/rufumomebufas.pdfIn PDF document text
    • https://luroxonigin.weebly.com/uploads/1/3/1/4/131406321/631c1e.pdfIn PDF document text
    • https://cdn.sqhk.co/puvivefujef/ifBjf8b/good_clock_weather_widget_for_android.pdfIn PDF document text
    • https://vezulapas.weebly.com/uploads/1/3/0/9/130969209/1223447.pdfIn PDF document text
    • http://srakan.space/buwamamoposivejobivepzd1l.pdfIn PDF document text
    • https://folitovuf.weebly.com/uploads/1/3/1/4/131406115/7094382.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lixisariwulo/pestel_analysis_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/18180825873.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/free_vehicle_log_book_template_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/armin_van_buuren_untold_festival_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/2011_population_census_thematic_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/suxetajumokovoteviwek.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e51f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51F 5108 bytes
SHA-256: 49eff608dcfb71fd9d2e92613529b771f9af7c74fa1d42d0d72af66530b52dbd
font_01_sfnt_off0000f684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF684 10284 bytes
SHA-256: f1f9de004598b24265d7dc4956afe3498d63331dff724a233e21f027ea10c8a6
font_02_sfnt_off000119c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C0 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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