Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e9618966b53c5f3…

MALICIOUS

PDF

85.5 KB Created: 2021-03-04 00:46:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 2470a9987418556f74c7f0089064b991 SHA-1: 33ce2ec8ef5a2e7ba0cd075f90c227de4710d0ad SHA-256: 8e9618966b53c5f3b5d8069f07d650d6d780dcc284615f1389edf2bb6ddca113
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search engine result, aiming to trick the user into visiting a malicious domain. ClamAV detection and ML classification strongly indicate malicious intent, specifically phishing. While no scripts were directly extracted, the PDF structure and embedded URI are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://golowaki.ru/strik?utm_term=what+is+the+coldest+city+on+the+planet PDF link annotation
    • http://foxeged.22web.org/44394001511.pdfIn PDF document text
    • http://mignonette.space/lapaz0ygus.pdfIn PDF document text
    • http://filmera.ru/gajimoliwful8f.pdfIn PDF document text
    • http://rerixen.scienceontheweb.net/asus_rt-n66u_password_reset.pdfIn PDF document text
    • http://helpcontactform.com/page_keeley_formative_assessment_probese213y.pdfIn PDF document text
    • http://jekigun.22web.org/best_crappie_fishing_guides_in_texas.pdfIn PDF document text
    • http://netopodimamo.mywebcommunity.org/how_successful_is_age_of_sigmar.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/educational_research_quantitative_qualitative_and_mixed_approaches_7th_edition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sexupoweduf.epizy.com/operating_system_examples_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/blank_yearly_calendar_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/93692371533.pdfIn PDF document text
    • http://mojogoralil.onlinewebshop.net/7364756553.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/blog_de_descarga_de_libros_gratis.pdfIn PDF document text
    • http://ralarer.rf.gd/kefobimabowubige.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/background_check_authorization_form_dshs.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/wukugotirezukagaku.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_off0001025b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025B 5180 bytes
SHA-256: e30eeaf96eddc907053c4cdfabb1653912150fcef4212bb29f78994cf2ed77eb
font_01_sfnt_off0001140b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1140B 16480 bytes
SHA-256: a48d7cedc60cbb891a3a95ef88e9c28a4cd17343f20427f2c17613b59a802ad2

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