Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ebda961ee9b899…

MALICIOUS

PDF

86.2 KB Created: 2020-12-18 18:55:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 6002ee9d1e527ec7c8ba4193352f991b SHA-1: d5dbdd6263b86c1a559ecf162ba410ce3cd608cd SHA-256: 72ebda961ee9b899f3da4a46dda1f5156a26b4b70f6c283e07712fe3970643bb
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=warriors+into+the+wild+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408864/normal_5fb4c7bb447c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424040/normal_5fcd89381d86f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369654/normal_5f92739f66a1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369919/normal_5f958cf604858.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_5f9491887402a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/29870716117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/817dc080-bcdb-42c4-969c-4d14655f0c9b/sans_undertale_megalovania_earrape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ecb5243-ea15-4142-a524-a444dc1697ac/stunt_lightsaber_combat_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/pabolamaxetufikuvuvezubam.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/gps_app_android_kostenlos_wandern.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e44f423-4e79-4df6-916a-7a552b880ef1/headway_plus_intermediate_writing_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/103eeaea-a91c-485c-a706-c3f27a0d2fbd/kejex.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/tapiwumumixag.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED00 6008 bytes
SHA-256: 7edea098cb988091b049d228ae5c5533a8f3cb1303944898e98b24918e28498b
font_01_sfnt_off000101bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BB 5020 bytes
SHA-256: bade20f750f9f0a80b600d0aeb50b3789e4418ad90bc97f9e0e3a6b99a086ec5
font_02_sfnt_off000112d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112D4 14272 bytes
SHA-256: 764d41ea22b002319e9107130d17d0b091cc5effc2dfbf96b63300f0d8f2cddb
font_03_sfnt_off00013d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D43 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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