Malicious PDF — malware analysis report

Static analysis result for SHA-256 048b21024e0dca70…

MALICIOUS

PDF

61.6 KB Created: 2020-11-19 19:54:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e3dade3515835ba9afb2d85f8d5ba104 SHA-1: 90ab09d0705b7c3fb44f7e31d9968873bc064cb6 SHA-256: 048b21024e0dca706e115e4fa167f9ed318187d5354918bf318ba236045132c1
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/strik?utm_term=edwin+louis+cole+books+pdf'. This URL is the primary indicator of malicious intent, suggesting the document is designed to lure users to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

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=edwin+louis+cole+books+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415739/normal_5fa08fda10149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380392/normal_5f8de9bd59a04.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/9b67f903-c2b6-44da-98b1-c71da6bb0e5e/62298236561.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/bahaya_merokok.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/staff_meeting_agenda_template_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b7f8774-2dfe-4474-8e1d-48c7ec9c28b1/xiraborifenidudokig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/513e5347-70d4-41ab-9890-d7e16f6d594f/agents_of_erosion_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/lapawewidapuzenuvosamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68af43bc-b6b9-4eca-afa6-81573c020510/79861293747.pdfIn PDF document text
    • https://s3.amazonaws.com/vasagesorajirem/76_unblocked_games_slope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7e8f74a-7249-4bf3-b6b0-5e53227169da/40133759567.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/florida_stipulation_of_dismissal_form.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/schultte_basteln_vorlage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f30e8d-3d4e-4fb6-9f2c-342d6ecff245/mofiponun.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB407 5096 bytes
SHA-256: bef233ad9a502029143e34506845b4834adc5afc384a67e36ca9ece49f3b7933
font_01_sfnt_off0000c58c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC58C 10788 bytes
SHA-256: 199091e4dd4e9630fc359c491ac8152de8c4317f73e9b338752536a3dd739215

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