Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe626ea090e6f2c…

MALICIOUS

PDF

42.7 KB Created: 2020-11-08 10:18:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: e3a8b373ff88c71be9e8a340396b9798 SHA-1: 509db6807b001687d70d3481a98c9b256b469dda SHA-256: 7fe626ea090e6f2c5d9c3808c4a8558e5c23a439914d4936b8597c88962226be
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://traffine.ru/123?keyword=maytag+lse7806ace+manual+pdf In PDF document text
    • https://jikesekija.weebly.com/uploads/1/3/4/3/134367489/tewobafoxokuwena.pdfIn PDF document text
    • https://degepuwenezeg.weebly.com/uploads/1/3/1/6/131607310/9184a.pdfIn PDF document text
    • https://serabonileraso.weebly.com/uploads/1/3/4/4/134444783/5dc1bc.pdfIn PDF document text
    • https://gikusevenax.weebly.com/uploads/1/3/4/5/134529244/wowugov.pdfIn PDF document text
    • https://wudizibi.weebly.com/uploads/1/3/4/4/134477582/bfd0a1fb.pdfIn PDF document text
    • https://lugoponogib.weebly.com/uploads/1/3/4/4/134404253/vefukabusigaga.pdfIn PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/7325a0bbbf1a.pdfIn PDF document text
    • https://nugaginidej.weebly.com/uploads/1/3/4/4/134475369/6808455.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://uploads.strikinglycdn.com/files/26ce14f4-affb-4753-89e1-259229efef7c/81588661589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3adc7082-d90b-4769-af73-31e6b5636542/tonibadexute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbb27569-2a87-400f-8f93-1397433341a3/wivadotolirisuwamuwopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/767bc6dc-7e26-4ce5-8740-b2aa492a9de7/vupowufuwisibar.pdfIn PDF document text
    • https://pulowesap.files.wordpress.com/2020/11/wejalijegegefazi.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_off000059b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59B3 5780 bytes
SHA-256: 96f01e3f559406a3a8bf5f8ca547e7bfa859a842e2e068e3f35a63a219d4e921
font_01_sfnt_off00006d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D61 10324 bytes
SHA-256: 4e1a1977665f64504d27369d6cec0116b3da50d1aa03c64245c2eba72b274861
font_02_sfnt_off00008fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE0 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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