Malicious PDF — malware analysis report

Static analysis result for SHA-256 1283832feac3310d…

MALICIOUS

PDF

66.7 KB Created: 2020-11-19 06:56:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a585452570124466036e050920aeb07f SHA-1: bb7d64b8910502771397d4cedeaed42708d6fe02 SHA-256: 1283832feac3310de5d2a3c9e959d177d2c622cc175b4ce15660bafa3b940162
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 indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://cctraff.ru/123?utm_term=knife+gate+valve+symbol. While no scripts were extracted, the PDF structure and the presence of a malicious URL strongly suggest a phishing or malware delivery attempt.

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://cctraff.ru/123?utm_term=knife+gate+valve+symbol In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388157/normal_5fa273be25248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382414/normal_5fa8cae681823.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416790/normal_5f9ac648d4e29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421472/normal_5f9d014b6d53a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448096/normal_5fb5d349ec54a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380079/normal_5fb02e02667fe.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/purufiz/41872092983.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/91288002810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5055895a-64d3-4d8a-82c4-25cc6278faf3/19338914560.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/baterias_bosch_catalogo.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/letilibitup.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/zizev.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/angle_of_elevation.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/73170738545.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/136c1799-d930-4ed5-8806-f4d2b8fa32ea/33597288017.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/equations_of_uniformly_accelerated_motion_worksheet.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC942 5260 bytes
SHA-256: 750a28bb651b16d01c97fba5056cd23ccd219905f9acecfb75c38d77828cdd18
font_01_sfnt_off0000db39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB39 10264 bytes
SHA-256: 6de8d6950b757b47115167c3e86c1f4be8b2d8db1b88308321e0e663701e611b

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