Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc97d61f7d45f62…

MALICIOUS

PDF

66.4 KB Created: 2020-11-26 00:57:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: fd0390629c43b0f3d0a29e7703dd7b8f SHA-1: 1897c494ab914059930c632d36d435a5f842801b SHA-256: 1cc97d61f7d45f621d5ff6b5fb41c4e7ec05e7ad2ff1036acaf50ab938481fff
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing page or a second-stage payload. The ML classifier and ClamAV detection further support the malicious classification.

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
  • 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://gettraff.ru/strik?utm_term=classic+league+soccer+dallas+texas In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_5fbe2692bbd49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418199/normal_5faee83484ca4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410722/normal_5fb4d92d8b12f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391317/normal_5fa390445af17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474977/normal_5fa8a9362da40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412894/normal_5fab88451f7ef.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/26dbfcb2-2c5b-40f8-8df8-fa276db02caa/gameganifogusativarutusil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f798e661-89f1-4f24-8c18-a84ab9a0ebba/tidejikewavaxemar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b45ec2c3-9c5a-44f5-ac93-e094dabb6b3c/venus_the_dark_side.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/mrv_receipt_number_for_us_visa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f0af07a-b653-4f04-a202-3541fce819bd/shock_collar_training_guide.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_off0000c6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D2 5080 bytes
SHA-256: 1143d60b899bc5a21f46c87d3a101dd441276f821fa634c5752f079f7ee0769e
font_01_sfnt_off0000d81f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD81F 10896 bytes
SHA-256: fc96599b154a33d482bdff4a75de5117695b01ce740dee0b593c8ecc32991bce