Malicious PDF — malware analysis report

Static analysis result for SHA-256 30302f11b83a3129…

MALICIOUS

PDF

63.8 KB Created: 2020-11-17 17:41:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 2ba43d173b608f0d1f9a1ec434ba6fc0 SHA-1: 7ffe47402fb4581c42ced9ab17f0b1144002c68a SHA-256: 30302f11b83a3129f08871faa9e86eea9b625a27db8624357bb65944468ada84
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link, specifically pointing to 'https://gettraff.ru/strik?utm_term=minidx3+software+download'. This URL is presented in a way that suggests a software download, aligning with a phishing or social engineering attack pattern. The ML classifier and ClamAV detection further corroborate the malicious nature of the file.

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://gettraff.ru/strik?utm_term=minidx3+software+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4445550/normal_5fa4a25a80bc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404741/normal_5f9e56091c822.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368478/normal_5fb2a14565747.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386597/normal_5fa6b03a101d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mipeboro/automobiles_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/lycoming_county_warrants_wanted_list.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/70416716443.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/88245170520.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/7490945647.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/product_rule_of_exponents.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a69ed31-05f8-4710-8b8c-04261fd3e4ba/guess_the_song_answers_level_7.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/581425634.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/zobubulumizoxululaz.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_off0000bd8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD8B 5228 bytes
SHA-256: e331dc1ac058c0812049f22f6a0286fa2fbc35ad47ed895d34593b8492633870
font_01_sfnt_off0000cf87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF87 10340 bytes
SHA-256: 77536e8b9a77d2e4a94abb5156e1688a9d291d1f29c5f5012678c1580258304f

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