Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c07d60597c47bd…

MALICIOUS

PDF

71.8 KB Created: 2020-11-14 15:52:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 519efb4dc3c67d68054701ec44cbfac2 SHA-1: 4828871b0e157d6c3114994de50606f590600a46 SHA-256: 06c07d60597c47bd2bf53580eb84644f2b8d93d7cef826be21e0f928f35e3ddd
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one pointing to 'traffnew.ru', suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=portal+framed+agricultural+buildings PDF link annotation
    • https://niwejeru.weebly.com/uploads/1/3/4/3/134308800/siwejutifub.pdfIn PDF document text
    • https://zewabezasakaru.weebly.com/uploads/1/3/4/5/134593707/7754599.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385614/normal_5fa99259cef77.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/fizup/scholarship_2020_2021_undergraduate.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/free_english_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/chemical_bonding_crossword_puzzle_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/rariroxuxowal.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/bacteriologia_definicion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7169d17b-49b7-47e0-b4f4-a82482602835/90174971370.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/ohm_s_law_worksheet_basic_circuits.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_off0000dbbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBF 5484 bytes
SHA-256: e8505a65fd8b8fb9efc3b3ddb07a1df5a62aabd36c8c60b1f1f175cd0bd047aa
font_01_sfnt_off0000ee4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4B 10636 bytes
SHA-256: cab7c8f368878b5e8eae9d5bddd9988bea3eada1852fc4b4dbe853f7fc62ccaf