Malicious PDF — malware analysis report

Static analysis result for SHA-256 7828658c2c914b61…

MALICIOUS

PDF

73.3 KB Created: 2020-12-31 16:40:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d26dcc11f9ba6f9cd202318ed6b984d3 SHA-1: ba16e687f744d22537ab89fe92d75a49cab78716 SHA-256: 7828658c2c914b6105f281d7b2f903dadd3d0deb10acac6b42833057acafeafb
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'ggtraff.ru'. ML classification also strongly indicates maliciousness. While no scripts were extracted, the presence of a malicious URL suggests the document is designed to lure the user to a compromised site, likely for phishing or to download a secondary payload.

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://ggtraff.ru/strik?utm_term=zion+national+park+trail+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4469837/normal_5faee641d819e.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/ihgjhji/movistar_team_2019_twitter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474727/normal_5fbd04dc635fb.pdfIn PDF document text
    • https://cdn.sqhk.co/jasowipe/gfihjaM/sharpen_image_gimp.pdfIn PDF document text
    • https://cdn.sqhk.co/defalevoruw/KQTgjar/power_rangers_legacy_wars_best_characters.pdfIn PDF document text
    • https://cdn.sqhk.co/jafetegupam/7UhfKho/tuzovejojowezevolozefar.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/ae1f8089-220f-4dc5-b635-4a4174912b8b/save_mr_president_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/netflix_shows_on_hp_laptop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4f12a32-5981-41d9-93b2-71e71e3c18a7/2754796641.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db0dcd79-6c49-46c6-a4e7-107e7002f919/lon_po_po.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/784c7c50-f95d-46bb-9758-9c61ccd5f7f3/21984388388.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/58516069082.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4d8226c-d30e-4cae-8c83-e8b695c6b359/geometry_5.8_special_right_triangles.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_off0000e303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE303 4968 bytes
SHA-256: 5805b4ab279e5a36869f02a26908bf6e59d3e27b3909453546b3aaa5bc0fde69
font_01_sfnt_off0000f3fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FC 10644 bytes
SHA-256: 393a8896884a7dba0c8ad2fc1edb96ae6441e3e62bf04bd14c6c07a0cf3e2290

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