Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d14f80d4fb0cf3…

MALICIOUS

PDF

40.1 KB Created: 2020-11-01 06:15:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b9dae146dc1e2d03b5da180dc7b35966 SHA-1: 2591ec43bb61528fcccb51f07123b4abefbff2a4 SHA-256: 28d14f80d4fb0cf3603d864e19de7230247cfe5672de7defb68f25dc6cc56a8c
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ggtraff.ru/aws?keyword=toy+machine+skateboards+for+sale In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/71f68ef9-497e-4d90-a692-ee3acc474781/lipibeto.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/amazing_spider_man_comic_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79cd664a-539f-4b38-b222-eed5f02921ba/vitutoj.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/collin_county_court_records_hours.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/greenworks_pressure_washer_1600_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/rozotimeba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56097168-55e4-4ccf-9ba1-bd96312d9559/55655353056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b79b44a1-fe2b-454b-b632-2090853092a2/3491154865.pdfIn PDF document text
    • https://s3.amazonaws.com/potevip/azar_basic_english_grammar_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/tabel_asmaul_husna_dan_artinya.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eacf105-3af5-4bea-836c-7b2d0abc8e53/fokobadeloduxad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5110485c-b851-412c-8576-eb2462ed252f/65466767685.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f85b8581-b54f-4c4c-a75f-a28a84d576ba/kopusowevavesodo.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/vovov.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/backorder_processing_in_sap_sd.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_off00005b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9C 5516 bytes
SHA-256: f4d5924355b4242942da1084a6913e801dfacd88c871ef296188c724bed818bc
font_01_sfnt_off00006e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E35 11988 bytes
SHA-256: 11d53d0fc9ed8f5d20ce45d1d20955c365943d409021acd45ec20bdb7c64a4d6