Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c064219e499a6bf…

MALICIOUS

PDF

70.3 KB Created: 2021-01-13 17:59:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8c2ff99bb4f80830ee1d1b6bc994832b SHA-1: 2f4383896ea99c6f208d65ff74b4007430dbe320 SHA-256: 3c064219e499a6bfb1111da50f34b728348b69a79aac323f07c7bc275bc4a537
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, 'https://traffnew.ru/123?utm_term=what+does+hotshot+trucking+mean', suggests a phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs point towards a social engineering attack, likely a phishing lure.

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://traffnew.ru/123?utm_term=what+does+hotshot+trucking+mean PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420036/normal_5fd17920df807.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422627/normal_5fbc4342b50a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476757/normal_5ff1cb4c0f402.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417643/normal_5f985138edf73.pdfIn PDF document text
    • https://site-1177634.mozfiles.com/files/1177634/play_4_ct_night.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388279/normal_5fd61b6fdd916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388050/normal_5f8f6dac2ad21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392857/normal_5fd7c1d47577d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389601/normal_5ff617c48ad07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461234/normal_5feb9439adaac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412588/normal_5fb407c2551cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404313/normal_5fd6759ab9c17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369654/normal_5fb2c86b36c08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446776/normal_5fb6efe5a6f29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD590 5396 bytes
SHA-256: e1b4ef85866a603072321b54cb7332fdcea42be15b744de203c2e6d3cca4ff81
font_01_sfnt_off0000e7d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D3 10656 bytes
SHA-256: 72d8eb8a59f48cadb023f69a082c85ff36476d272f427a99b727915a4ee651a0