Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e15f7ba2ce93637…

MALICIOUS

PDF

66.7 KB Created: 2020-12-07 18:42:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: fc1a674f771f3701719ec5eea28a1465 SHA-1: 1e9bac6ad8b89603e61fa13e1802f009633cf149 SHA-256: 1e15f7ba2ce93637dd4400393ed4d0d98d82650f3e92903c89ee8e45730d4c23
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://traffking.ru/123?utm_term=grammar-translation+approach+advantages+and+disadvantages, is the primary indicator of this malicious activity. While no scripts were extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=grammar-translation+approach+advantages+and+disadvantages In PDF document text
    • https://cdn-cms.f-static.net/uploads/4405184/normal_5f9833e9b662f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe022a1972c46e3c65d3c9/1606287915515/electric_nectar_collector_tip.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc07dde27a199023ab34438/t/5fc1c80061e25426e17a2c53/1606535177465/sometimes_a_great_notion.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf540dfa04221c711735b6/1606374417505/best_buy_mayfair_mall_victoria_bc.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/12567694964.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/48566944299.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54a7e5e8e827d42aae423/t/5fca3f36414f5e3523855daa/1607089982210/93965716798.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/what_is_the_full_form_of_misfortune.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/executive_summary_report_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53b4dd49dd1244750b521/t/5fc8bfc6094cf7617dc82f8f/1606991814735/touch_em_all_car_wash_coupon.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_off0000c6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6B2 5612 bytes
SHA-256: 0ccd884ff0685aae57fa1bb86d0c391c52f0a2dd6ae875060b521bc4821c3620
font_01_sfnt_off0000d9ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AC 10724 bytes
SHA-256: d338a232ea83a73e409e44bbbc8911670b1eda2b3cacda9cd0697910033045d8

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