Malicious PDF — malware analysis report

Static analysis result for SHA-256 576d20a6d107d3d0…

MALICIOUS

PDF

60.4 KB Created: 2020-12-21 20:20:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 14e240dd513194c1db24e333699dcc0f SHA-1: 3e3680dd0e43487cbaea94a5192780d7dea8b42c SHA-256: 576d20a6d107d3d0ce761c4ee07f869cbe272e22d574f56c359c95628f3dcbe6
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffking.ru, which is disguised with search terms related to BMW repair. This indicates a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support the malicious verdict. Although no scripts were explicitly extracted, the PDF structure and embedded malicious link suggest it's designed to exploit users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/strik?utm_term=bmw+transmission+repair+near+me In PDF document text
    • https://zadefiwexosufe.weebly.com/uploads/1/3/4/6/134634331/a4f8873e8f6.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/2525163.pdfIn PDF document text
    • https://zipazoraxegav.weebly.com/uploads/1/3/4/3/134325660/5721555.pdfIn PDF document text
    • https://zaxizibu.weebly.com/uploads/1/3/4/6/134672664/zimaginaza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc556c62bbd740658240790/t/5fd624b5e5ac5828961a8f97/1607869622990/antes_del_fin_ernesto_sabato_descargar.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/baixar_jogos_para_pc_torrent.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/40202947158.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc0649ab-345a-45c0-a8a6-09084210130e/35465397669.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/33505681010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0e118d6-0f28-4e51-8197-11d1d1aa85c3/mibufewiwepoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82ff8eb0-31d7-41b8-8e49-74c216ba752d/64259916649.pdfIn PDF document text
    • https://s3.amazonaws.com/suzitivasekoga/punnett_square_worksheet_answers_biology.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/junakelunufo.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/examiners_reports_oxford_maths.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_off0000b377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB377 5076 bytes
SHA-256: 7c95b1bd7fb8d5b69fcfba109a87e57d2a865e7494a342599202b1b1bea650df
font_01_sfnt_off0000c4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4AD 9416 bytes
SHA-256: b2b3521a8ad78b78537d67e996917d702bec41bccdb5f2aa68e8ee1728cb4d06

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