Malicious PDF — malware analysis report

Static analysis result for SHA-256 b483bcba3f29fbd9…

MALICIOUS

PDF

66.7 KB Created: 2020-12-24 00:51:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 35f2b1eab8b64351e3eae25d43f60d02 SHA-1: 5c4c2c86587481ca6b0ae367189b26d499248c0c SHA-256: b483bcba3f29fbd969f47c8c4c2ab22e7e4d61d830be0d8caab2037d5da0dd3b
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffmen.ru/strik?utm_term=car+carpet+cleaning+solution+diy In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/woxisawevimukamamono.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/definition_of_it_infrastructure_department.pdfIn PDF document text
    • https://s3.amazonaws.com/naramuro/xuzomuxogewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9111a9b-dbbe-4578-9d31-821e435a9e8f/turn_the_ship_around_workbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8a1bf70-ee55-4877-a71c-017206d17921/gaxudoxiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64e90c2b-c914-4713-a8d2-c0b1627b9259/xasewagejodixovawoturuvi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c56d1374-1654-49e4-a59f-52d2f1a97287/34150898026.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b35b67fd-7928-4089-8afe-28cc12059165/juxepoxewe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84b158dc-df21-4330-b5e5-be4fe78cd4aa/paradox_key_gen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5402f25c-dc04-4465-b031-3e8a41257342/56564276900.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/experian_free_credit_report_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/zemumana.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/walojativibeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a00f8dac-c144-438c-a80a-bb0749f84298/mines_golf_course_map.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_off0000c987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC987 5248 bytes
SHA-256: fa1ff313925b25f1f3f14e41e5606af1006dae4f3d08929679a418d84031f291
font_01_sfnt_off0000db70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB70 10560 bytes
SHA-256: f6684c82141bdcaa9fc35912d61256d7cb621c322c71f09b7a0a663ad4f4f82f

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