Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e5c4cde0d50470…

MALICIOUS

PDF

74.4 KB Created: 2021-01-17 02:46:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3aa87188b9d111759d700cab6fcd84b7 SHA-1: 2f25b910c3a1ca3108a7af5dc1668ff4d959d1ea SHA-256: e5e5c4cde0d50470d81880042899d56a6e456d5804aa67d973950c529e745175
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://traffine.ru/123?utm_term=compute+the+company%25E2%2580%2599s+total+cost+of+merchandise+purchased+for+the+year` is the primary indicator of this phishing attempt. The ML classifier and ClamAV detection further support the malicious nature of the file, suggesting it's a phishing document designed to redirect users to harmful sites.

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://traffine.ru/123?utm_term=compute+the+company%25E2%2580%2599s+total+cost+of+merchandise+purchased+for+the+year In PDF document text
    • https://site-1245460.mozfiles.com/files/1245460/kizugexedojefunolupovu.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/Qheghgc/land_rover_90_for_sale_usa.pdfIn PDF document text
    • https://site-1176846.mozfiles.com/files/1176846/ranking_test_sensory_evaluation.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369498/normal_5fefdf1a26d62.pdfIn PDF document text
    • https://site-1168429.mozfiles.com/files/1168429/66260921403.pdfIn PDF document text
    • https://site-1250909.mozfiles.com/files/1250909/kali_linux_android_emulator.pdfIn PDF document text
    • https://cdn.sqhk.co/lilavokolet/eVhg3IA/damonivefeketasulefazad.pdfIn PDF document text
    • https://site-1166704.mozfiles.com/files/1166704/58517566338.pdfIn PDF document text
    • https://cdn.sqhk.co/mezugifosa/chhidIn/file_manager_apk_ios.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/pomaxa/rotobuniguvajupekoluf.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/52549152913.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/antimicrobial_agents_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/bureau_veritas_logo.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/14538486632.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/kulolavokalolizukoj.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 8

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_off0000e0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DA 5452 bytes
SHA-256: 430ff6ac466e20696b7b3e3f636a88637e34bc8b57377370b8bea41e946eac39
font_01_sfnt_off0000f34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34B 11164 bytes
SHA-256: 296564e9b0069820b430e83e27b9742e1fd2175fb3050cb8039e834c664c5251

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