Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1bcac684573ed4…

MALICIOUS

PDF

67.5 KB Created: 2020-12-17 07:06:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 267ca4be8608257e40e641130de96a22 SHA-1: 24a41c41f44126b3a88ee6b508f5a0c6f22bfb6c SHA-256: 9a1bcac684573ed48205ce1546d820e16b1d546456aa19ff60baa4ce049a38eb
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/123?utm_term=sankara+eye+foundation+mumbai'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=sankara+eye+foundation+mumbai In 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/f846e9d9-b6a8-4844-a89a-aab2f2a7c4e8/meltys_quest_guide_steam.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/55828999288.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/r_and_r_sports_huntsville.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be5f1a8c-7fc0-4570-998c-0f6962787301/60727204731.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/personal_finance_study_guide_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/laboratory_incident_report_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5729abef-1be4-49a3-9ad9-c5171155db18/hamilton_beach_slow_cooker_manual_33967.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/7045226855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89b9abe7-6be2-467c-9fbe-53746f3feb23/xugogutamegu.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/begin_with_end_in_mind.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/teronekiwofakubipuzegurox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38902af3-bdb8-40c4-b4c3-eb6f557f5e7c/34024460621.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3d10f81c9a2a0c6e0057/1606302993042/wojalu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc011b424b06a7eb3fa7d30/t/5fc19fd0cb3e0f57718d5206/1606524881495/vinyl_sticker_machine_for_sale.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_off0000c811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC811 5252 bytes
SHA-256: 1ef7be9d2e59a7fb18396ef0315a7f5aa9a9ab45076ad8b639f4d1c12e524eb3
font_01_sfnt_off0000d9ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EA 11020 bytes
SHA-256: a5b8362c9b7fe8f655ca86d122af6850bc9bb69fea5786dc4cceb8d4c48e9044

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