Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde3e2de307eea61…

MALICIOUS

PDF

82.2 KB Created: 2020-12-19 23:18:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d4b1a2b4c9cb6d76657a50232d6f2615 SHA-1: 1fdf4ea61b49449983ca951df8bb2d3ee1853f48 SHA-256: bde3e2de307eea6126494720bbbc14ff5f04e62c86e9bbac1da463f4c5a0bc8d
244 Risk Score

Malware Insights

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

This PDF document contains a large number of links, many of which point to redirector infrastructure and disposable hosting, suggesting a link farm or phishing campaign. The primary URL, 'https://traffking.ru/aws?utm_term=super+mario+bros+theme+piano+sheet+music', is identified as a malicious redirector. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf, indicating it was likely generated programmatically to host these links. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffking.ru/aws?utm_term=super+mario+bros+theme+piano+sheet+music In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f890a3e9d945.pdfIn PDF document text
    • https://dubuzosokiboxof.weebly.com/uploads/1/3/1/1/131163723/marupo_marezotexip.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/epi_test_max_ingredients.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5fc22be5b0cbe.pdfIn PDF document text
    • https://pizipeko.weebly.com/uploads/1/3/4/6/134611096/92a1f0b4cf6.pdfIn PDF document text
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/depura_dorobukuvefo_riwod_ramuluxi.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/roraladadudigu.pdfIn PDF document text
    • https://lizotolagodega.weebly.com/uploads/1/3/4/4/134495854/236792.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5f87bbcedff82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370074/normal_5f889f2d784c2.pdfIn PDF document text
    • https://vawavujak.weebly.com/uploads/1/3/4/3/134350312/pixirunorujalenes.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/editorsdepot._com_for_free_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/tatalaksana_atresia_ani.pdfIn PDF document text
    • https://xepajozojiv.weebly.com/uploads/1/3/4/4/134476610/pesenel_xibogijokuneduw.pdfIn PDF document text
    • https://nigiseza.weebly.com/uploads/1/3/4/4/134462574/6736465.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403283/normal_5fa492b86e6d4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f02b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02B 5384 bytes
SHA-256: 8f68a524cd93ee7671e0a9ed24a0c5ac095c713f73db47ae29d2acf04d20a069
font_01_sfnt_off00010244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10244 10508 bytes
SHA-256: 4e2b5a2e33391494e89e265fec06c0e494b19f6900bc1f1e58075664f965eab0
font_02_sfnt_off00012650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12650 16100 bytes
SHA-256: d973db94ba2c448c661c26f08d051ac794e7cb4f3c7daa33c2141e8036f071b6