Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dac65d5273dff75…

MALICIOUS

PDF

69.2 KB Created: 2021-01-28 14:11:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b9e0533acce177504e04dc8ff0d30931 SHA-1: e03745f70ee3a1d61feb39bcb681fe5a8e50bff1 SHA-256: 5dac65d5273dff756be0d8a624e161b2f2fcb8094715854bc9c7aa75ffb7bc77
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document contains a link to 'traffine.ru', which is identified as a malicious redirector. The embedded content, though obfuscated, suggests an attempt to disguise the malicious link as relevant information.

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://traffine.ru/wb?keyword=bubbler%20drink%20nutrition%20facts In PDF document text
    • http://skidki-day.store/68511007216n8bne.pdfIn PDF document text
    • https://cdn.sqhk.co/salavogi/fIieUBD/tribal_clothing_wholesale.pdfIn PDF document text
    • https://cdn.sqhk.co/nutewakizi/cia1iXJ/different_ways_to_play_mancala.pdfIn PDF document text
    • https://cdn.sqhk.co/bomunerafoju/tGjgsH7/39848296304.pdfIn PDF document text
    • https://cdn.sqhk.co/palazawu/jiojiib/24586773544.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafaveju/fJO0Jgj/highway_patrol_office_phone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/rugugojeba/ieQ8Whe/15335570783.pdfIn PDF document text
    • https://cdn.sqhk.co/bedazume/iiifF8F/wenojivotuk.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/jaUjjhe/zixipipesemoliv.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/rizijubovapuk/lanuzeluluj.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/aspen_plus_examples.pdfIn PDF document text
    • http://bigofufujenu.epizy.com/post_marketing_campaign_report_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/abscesso_hepatico_piogenico.pdfIn PDF document text
    • http://supidanerij.epizy.com/fusionner_deux_documents_en_ligne.pdfIn PDF document text
    • http://favekagopu.epizy.com/7459364433.pdfIn PDF document text
    • http://gadivedu.rf.gd/8353781745.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/jokes_for_adults_with_answers.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_off0000cf74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF74 5268 bytes
SHA-256: 213cfb4cea7b149476eb0c041193f3ca5588966d564c5f945d0532382b9059e9
font_01_sfnt_off0000e168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE168 11260 bytes
SHA-256: 0e2591265dc822dd97737bf2c702e4ddbd2fe16ed5473cbd06953e8c3b79c4cf

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