Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6fa54e572b40ab1…

MALICIOUS

PDF

67.2 KB Created: 2020-11-10 01:47:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 27d9386077df3d627563ef7267fcf697 SHA-1: d0376fb5aeeb4303fa03349c060e5255e15af79d SHA-256: a6fa54e572b40ab1554eb392d459da5712eb9b17f508a0daa7be27f8bc22df55
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffnew.ru/strik?keyword=press+release+template+for+google+doc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369322/normal_5f8db7bc3bcc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383792/normal_5f974af433f94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405902/normal_5f9f733e87e61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455658/normal_5fa4f8844fcff.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/a0db6ec2-108c-4885-b5cd-5bcd65bd1797/75889297143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b00653dc-1ace-4805-9551-61e3a9358297/69796626783.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c45c38c8-6dce-4ee0-8aea-3b9daee4b3f9/jimiralixoduwojuxasamimo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5d58bc8-d12f-4509-8a6b-037f0524d95f/30055751138.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd057d16-6182-4a3c-9bb8-7bb567488b19/89295053212.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27b9dae2-62b2-4272-8ee4-aa20a922576f/into_space_2_hacked_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45a0cac0-21f4-45b2-8fcd-bc37dbd84b5f/putomovudadib.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/tabela_de_alimentos_ricos_em_ferro.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_off0000c655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC655 5476 bytes
SHA-256: f5b543ad4dbbf1b5d89b88a44919416522883bcae77cd55e0f373ed00b0996da
font_01_sfnt_off0000d8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E2 11220 bytes
SHA-256: 6c40a448c011cb2ee2e51d6bedd454e5225269a67c5c7b3dbaf7e4edf8827180