Malicious PDF — malware analysis report

Static analysis result for SHA-256 84196cc02fd78120…

MALICIOUS

PDF

65.6 KB Created: 2020-12-24 07:15:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: b8f0ce216dbe47084a99b96068ce4d1b SHA-1: 08d039101e3b52a8c38461a1be4eff26b26b60f8 SHA-256: 84196cc02fd78120a9c47fdb6d488d30e75b275c63906dc026d4fff6567008a8
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://cctraff.ru/aws?utm_term=canon+g2000+installation+guide'. This URL is presented within the document's content, suggesting a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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://cctraff.ru/aws?utm_term=canon+g2000+installation+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382949/normal_5fb2f21a10603.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_5fa0dd69cde02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368244/normal_5f932b0d6e35f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389586/normal_5f922fe898f25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378856/normal_5fbf079f270f9.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/wizidimawag/nixixokesutujidagewari.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d91e59b2-1229-4751-ae20-114c2f4ffbe4/apostilas_anglo_alfa.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/skype_for_business_basic_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/ancient_near_east_texts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9121e628-79cc-4d26-a424-446f50f7b06f/redijojezejulasonunigekub.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/zonemuzekaxopagalel.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/37673644081.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_off0000c600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC600 5076 bytes
SHA-256: 85415ac0e3d397672af9393741d29f8b867069152c3f5a27b570d058a2464349
font_01_sfnt_off0000d754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD754 10288 bytes
SHA-256: 3fff3be3091aefb927ad5b224e5df20eca6df172db4606feb1a8ae0000201ad4

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