Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0f4cdfd51e1c25…

MALICIOUS

PDF

62.2 KB Created: 2021-02-15 20:36:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a89b8b27e8d6361cf1812695fd8dfe20 SHA-1: 56182714320c56ac1e8477475d07f6e89f7570e4 SHA-256: db0f4cdfd51e1c25e049734778c5e524e999b687982af5d97b785d3408aac7ce
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, appears to be a lure related to a common consumer product issue, likely intended to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/123?utm_term=energizer+xbox+one+charger+not+working PDF link annotation
    • https://cdn.sqhk.co/simunenij/qQifwhg/extreme_motorcycles_game.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutazomaga/jhbXhiG/73062857914.pdfIn PDF document text
    • http://nizagose.66ghz.com/battlefield_v_firestorm_game.pdfIn PDF document text
    • https://cdn.sqhk.co/nanubebebot/27bicjh/6101292008.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kinapemib.rf.gd/nujevozemamaxutemevara.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/free_curriculum_vitae_template_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/fixilonomamawodizedofeze.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/67709587294.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/zakasajozewawakika.pdfIn PDF document text
    • http://xafamikipu.epizy.com/72141012488.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/characteristics_of_millennials_in_the_workplace.pdfIn PDF document text
    • http://pumonufagatoteb.epizy.com/watafomiwatozeni.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/vaccine_fridge_temperature_record_sheet.pdfIn PDF document text
    • http://dijinisefiregot.rf.gd/sample_brochures_templates.pdfIn PDF document text
    • http://jidoxib.rf.gd/high_school_reflexive_verbs_spanish_worksheet.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_off0000b599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB599 5224 bytes
SHA-256: 14a89b595117928738fd6d3f49ce3a14dbb95c614de17d9c9b0ca58cd4163e87
font_01_sfnt_off0000c788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC788 10192 bytes
SHA-256: 3caa118281112d236a9cdea0bd45ee4eba8354c67b83eca6e8e42df90b3185f1

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