Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b90732605bdd5f…

MALICIOUS

PDF

70.2 KB Created: 2021-04-05 03:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 53ccdbbff32a0d86c9d3759ffbe161ad SHA-1: 236160446e124e2768b3b9acbc83394394a8f586 SHA-256: 96b90732605bdd5f27c329f5fd2c53076ce53c64db35156be2590ce9fecf577b
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a garbled attempt to mimic search result content, further supporting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://leonvi.ru/strik?utm_term=how+to+open+a+coleman+battery+lock+flashlight PDF link annotation
    • http://heleogose.online/amgen_inc_email_formatf58gw.pdfIn PDF document text
    • http://jotafitosixa.getenjoyment.net/nibafefujewelufubo.pdfIn PDF document text
    • http://helpforteam.com/penn_ventilator_model_ab35b4h1k.pdfIn PDF document text
    • http://nunejabu.scienceontheweb.net/english_grammar_worksheet_for_grade_6.pdfIn PDF document text
    • http://chestlune.online/11087309749rj7gx.pdfIn PDF document text
    • https://cdn.sqhk.co/fiduzosi/m5HigYP/badminton_league_mod_apk_download.pdfIn PDF document text
    • http://wisatemubudu.medianewsonline.com/35987632297.pdfIn PDF document text
    • http://pedugubugof.mywebcommunity.org/jugobelekozimugiwuk.pdfIn PDF document text
    • https://cdn.sqhk.co/juwovatagevi/qidhdji/18843087963.pdfIn PDF document text
    • http://cabinetsop.xyz/zimsec_a_level_biology_past_exam_papers1vzbg.pdfIn PDF document text
    • http://meetchat.space/rockabye_audio_musichl8ac.pdfIn PDF document text
    • http://tijukilebag.getenjoyment.net/herman_miller_aeron_used_chair_for_sale.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/jijari/ruzupa.pdfIn PDF document text
    • http://dixadenidufudu.epizy.com/worasidonozemutivubix.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/16352528486.pdfIn PDF document text
    • http://gevevobar.epizy.com/concept_of_sustainable_urban_development.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/58050019466.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/fortigate_ssl_vpn_user_authentication_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/626eebd4-43da-4217-81d5-874c45d2e0a8/how_to_program_honeywell_timer_switch.pdfIn PDF document text
    • http://pufupivati.epizy.com/esma_guidelines_aifm_delegation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f46a598b-b065-43f8-be3d-0c6f2a5a52a5/brs_gross_anatomy_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66a9e5b0-7093-45b3-ae3c-c6d08f624248/assignment_03_en130_english_composition_ii.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/41077030073.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_off0000d1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1AF 5788 bytes
SHA-256: 587c9d85fccb57b149112c860732bffbdefb4015b5df62f7d7f7496f927376f3
font_01_sfnt_off0000e54d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54D 10644 bytes
SHA-256: 0021448030fafc17267b2389c09f86845c26840b28765ac39a3d1967cc8f49fd

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