Malicious PDF — malware analysis report

Static analysis result for SHA-256 c64ee27bb93fb607…

MALICIOUS

PDF

73.9 KB Created: 2020-12-29 12:59:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 842d4a3e9c3745b42477c826545a1986 SHA-1: ffea65c7f29939260c130cfd11f89824c80f41a2 SHA-256: c64ee27bb93fb60788966c3112fe3f469e1378c58525f67f96e7d69c8176ab9d
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic and the ML_NYX_PDF_MALICIOUS flag. The embedded URL is designed to trick users into downloading potentially harmful content by promising "Wordpress tutorial videos download". No scripts were extracted, but the presence of a malicious redirector strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wb?keyword=wordpress%20tutorial%20videos%20download In PDF document text
    • https://sulajaxa.weebly.com/uploads/1/3/4/3/134362611/5176384.pdfIn PDF document text
    • https://sagetiruguw.weebly.com/uploads/1/3/0/8/130814856/nomagudoti_lewudafumeda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416806/normal_5fabfb78ac7cc.pdfIn PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/9b7ac654e9.pdfIn PDF document text
    • https://rurasaza.weebly.com/uploads/1/3/4/8/134869927/937be194f85aa8.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/sizadagazagaj/weave_silk_saree.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bef438a-28c8-4402-970c-d707debd7762/notekovapej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9e758ce-78e5-439f-9926-4c62ead847de/fafiralabasevizegufun.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/fake_id_card_maker_software.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/beats_audio_equalizer_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/charlotte_s_web_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/vacation_calendar_template_excel_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/60667250565.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_off0000e5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F3 5120 bytes
SHA-256: 41c0d0dfafa1f774e33d946950e465d87b70abfa554fa01436d7ea100fee2151
font_01_sfnt_off0000f784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF784 10344 bytes
SHA-256: 63973993fe5ce5afc5b99de880efe9ea3c7b1a2e1ee1b023cd7c763ec14983e7

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