Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c26723888351aa8…

MALICIOUS

PDF

69.6 KB Created: 2020-11-16 17:56:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2cc9e73d793a5e20ef280013acb1444c SHA-1: b73f45b5852bad5830218157867986b1c94705dd SHA-256: 6c26723888351aa8d6e00b80622ef8087b7ac290df97d9030f777885dc5f5c78
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/123?utm_term=condominium+association+rules+and+regulations PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402933/normal_5fabf60a7a565.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375702/normal_5fa6555533405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457318/normal_5faa4e095060b.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/dadupawo/pikuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/131b40b5-83fc-46f2-8e0c-fa20b1ec95f9/1614491377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a8a1f4b-dd89-4304-8886-4628035138a9/conversion_challenge_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/661451d6-9a07-4a80-9897-2b9e1c30561f/semekulexirirevivuj.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/boyfriend_justin_bieber_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/tuzuzutofob.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/gogudomuvijamufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e575164a-c704-4c84-9626-8cc530d94a3b/pazepidanarukate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7314d84e-aabd-407c-b63c-1facf1032926/90771784350.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e96be17-f83e-4219-838c-acc51d2830eb/sotupufox.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_off0000d201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD201 5164 bytes
SHA-256: 554aea8df8e1b84610999a63447cf1506e022e2580b160a0a8d78f4e5d0f5312
font_01_sfnt_off0000e370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE370 11140 bytes
SHA-256: 93817772499b1a24c8696e478962f962a84c835ef506f27c54c2fd64864ee778