Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b30217e011d722…

MALICIOUS

PDF

97.3 KB Created: 2021-01-08 16:58:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ddcc4f867ee0dbda9cc5b7abae8317da SHA-1: 41dd4e8a55772a47367967a517f238fc931e41c2 SHA-256: b3b30217e011d722452bf0664ea7c4a00442b53842265c2f252ef3500ba2b280
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/aws?utm_term=amsterdam+tram+map PDF link annotation
    • https://cdn.sqhk.co/vixukose/hcY7wjg/silumivamutobalalevelo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416935/normal_5fb4d58ab0144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450247/normal_5fe9769549568.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402267/normal_5fab71c406e99.pdfIn PDF document text
    • https://cdn.sqhk.co/samumosoxivi/bhfieT4/61400442886.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/gGzIif4/magic_wand_tool_photoshop_2020_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/ramekodetuwe/gjahdxO/zitizegulepevutiza.pdfIn PDF document text
    • https://cdn.sqhk.co/tivomepu/jbgj6hb/rijavikibejamev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488570/normal_5ff24dcf2b31a.pdfIn 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/56396a62-5adc-4e20-9762-e816fff7e69a/dnde_para_encontrar_hierba_de_bison.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c08648d1-1646-421f-9f59-132749df46c7/como_preparar_pasta_texturizada_para_muros.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09702c4a-bde8-4086-9025-6ad059e3619c/milan_kundera_la_insoportable_levedad_del_ser_libro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc9fd0e6-7c6c-407a-b733-5ff16ccff8c7/banajitisugo.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_off00014156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14156 5064 bytes
SHA-256: d64e78d1b394a3e0700228001bf659d7f36e5a6b1fbb60c30a0e4efa1c62f4d8
font_01_sfnt_off00015274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15274 11412 bytes
SHA-256: d8895a211f464a4fe4b5270aff0885456801b2f006b9973b8d8d936a4a9fada3