Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e35e3a884250ab…

MALICIOUS

PDF

80.1 KB Created: 2021-04-25 20:17:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e7cc50900feb37686683b59b70d080e3 SHA-1: 0b066b9b793edf1cbe866e2305d3415da3233e67 SHA-256: 76e35e3a884250aba5ceef137f9df70f5bc46ad2b4fa1668a53ef48fa000b2a2
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains an embedded URI pointing to 'https://resalured.ru/strik?utm_term=who+dies+in+another+life', which is a strong indicator of a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://resalured.ru/strik?utm_term=who+dies+in+another+life PDF link annotation
    • http://arboozfilm.com/gitasunin5f2l.pdfIn PDF document text
    • http://fakaripeti.xyz/pokmon_diamond_and_pearl_adventure_volume_1_read_online_freeb0pfd.pdfIn PDF document text
    • https://cdn.sqhk.co/sawowudin/9jjTxd4/36624141272.pdfIn PDF document text
    • http://netlysy.online/shaded_red_dachshund0j9fb.pdfIn PDF document text
    • https://naxosunibeg.weebly.com/uploads/1/3/4/6/134676516/bekifimeborator_xewaw_vukik.pdfIn PDF document text
    • http://talemine.getenjoyment.net/is_there_a_replacement_remote_for_roku_streaming_stick.pdfIn PDF document text
    • http://fb-ig-copyright.com/wefozudawpfkoe.pdfIn PDF document text
    • http://hamsterbig.com/how_to_get_guided_access_on_androida7fqc.pdfIn PDF document text
    • https://cdn.sqhk.co/lewonuvaxu/ojaqibF/47992228678.pdfIn PDF document text
    • https://cdn.sqhk.co/vakolitakap/1gehaeo/best_power_bank_for_mobile_phones_uk.pdfIn PDF document text
    • https://zodixezujiz.weebly.com/uploads/1/3/5/3/135345824/760647.pdfIn PDF document text
    • https://lapolepep.weebly.com/uploads/1/3/1/4/131406498/f3487cdd5f26.pdfIn PDF document text
    • https://cdn.sqhk.co/ramejolir/WFDjHic/baby_yoda_chia_pet_target.pdfIn PDF document text
    • http://xezixaz.getenjoyment.net/general_biochemistry_mcqs.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/porque_es_importante_la_inteligencia_emocional_en_nuestras_vidas8zn4b.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/wemupajese/31550948448.pdfIn PDF document text
    • http://vasakuzepilaxi.onlinewebshop.net/16015837963.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/exploration_merit_badge.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/44217683520.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/composition_of_isometries_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/bruce_lee_tamil_movie_utorrent.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/permutation_problems_with_solutions_and_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_off0000fc7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7A 5008 bytes
SHA-256: b8828449d57d25bb40a28219ab0d6fdf6c2f9cb4b4f4e06be63e92a3de76dcd3
font_01_sfnt_off00010d86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D86 11120 bytes
SHA-256: 8a7cc4642a14afb4eb1e5edd92c6ba9ff3cda9fa0c18b3eeeefc26069b0a865a

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