Malicious PDF — malware analysis report

Static analysis result for SHA-256 59634abc915a20d7…

MALICIOUS

PDF

46.1 KB Created: 2020-11-04 07:21:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: eedf100288c7aeab526168dd61af4316 SHA-1: d79d0154a9e78b915cd234bc93784878cfd5b5a7 SHA-256: 59634abc915a20d71f5b64f7a896b243867792db3e1be9892b1d1dd4564a13a5
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful destination. The ML classifier also flagged this PDF with high confidence. The embedded URL, 'https://gettraff.ru/aws?keyword=sigelei+kaos+spectrum+230w+tc+vape+mod', is the primary indicator of this malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://gettraff.ru/aws?keyword=sigelei+kaos+spectrum+230w+tc+vape+mod In PDF document text
    • https://cdn-cms.f-static.net/uploads/4446036/normal_5f9cdf61565e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_5f8d8bfe4411b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386822/normal_5f9fb35f95414.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413966/normal_5f9a25034c932.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413454/normal_5f9967aa7b48f.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/gelovejoxab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gajejasa/the_cardinal_golf_course_fort_lee_virginia.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/everyone_s_hero_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb3d105c-a00b-4913-8446-72581d7a00dc/85918336951.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/74192385784.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9245771f-721c-4b25-965a-d5c480c047f3/we_just_dont_care_lyrics_john_legend.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/attitudinal_barriers_to_communication.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd329ab1-5bf9-40f2-9bef-1cdc2fae62d5/40838133014.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/equilibrium_constant_pressure_units.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFB 6148 bytes
SHA-256: 35d077e8a089883cf43fcc7c17c090263b43d6f65c05ee4441d3aa30eadaf41e
font_01_sfnt_off000083eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83EB 11060 bytes
SHA-256: 48132414c66783801412af043516cb4196fdc56570f58fd131f14ca2e5c5945c