Malicious PDF — malware analysis report

Static analysis result for SHA-256 dadc4ac7c6d80436…

MALICIOUS

PDF

40.1 KB Created: 2020-11-04 09:28:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1dc010f5e14fdd270289b58c74a34b35 SHA-1: d3f9f04834396ec31f3e3e5228cf2038b3140177 SHA-256: dadc4ac7c6d80436de2201f50e7ea721a1cbb4418c8212456b98ec28d7e1cdc9
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://ttraff.club/123?keyword=the+pros+and+cons+of+selective+breeding In PDF document text
    • https://sumozizadux.weebly.com/uploads/1/3/4/2/134266097/7170eb85ad1deb1.pdfIn PDF document text
    • https://letuwolisabir.weebly.com/uploads/1/3/4/6/134602086/toxazixititu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368788/normal_5f8a0cee6d413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393026/normal_5f9917af92a84.pdfIn PDF document text
    • https://jarofudi.weebly.com/uploads/1/3/1/4/131408364/35e4d.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/daraniwekamidir/6372403431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c12cf5b0-e764-4510-a915-93c5760d9b24/panusotarak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b458581a-446d-4e17-9c35-07da7cb89a99/69531833623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/444f6766-e78a-46fd-a169-b993d4326cf7/nupoz.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/dozevojiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37dd7dbb-9e09-4996-9dbc-7f5195ec0150/74883364817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6560638d-c6a9-4adc-8aa7-c2cfd5b393bc/continente_americano_con_division_politica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5777c81d-d49e-40f9-97aa-ff62b4d552b2/sinuzatexoragawolebabeba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/057b0828-0a63-479f-b9b9-82bb481538f1/61060130418.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_off00005f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6B 5568 bytes
SHA-256: 14f90b38835be056c75d35cca9b129cb3d6fdc2dbbefa10d6a8225d6d067e7c4
font_01_sfnt_off00007255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7255 9820 bytes
SHA-256: 3dbca77c83003f00711dbb82fe1d13eade81d3c59dab8b8ee57261d855b70307