Malicious PDF — malware analysis report

Static analysis result for SHA-256 26096ecbe5df3e91…

MALICIOUS

PDF

81.8 KB Created: 2021-03-02 23:40:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b323b57856deabca4b4c30f8be6ee821 SHA-1: 2f02b5e9a14494ac01e51d33f145288c1ca8b374 SHA-256: 26096ecbe5df3e916e504b36b8e7493678f2d3ecae977a322f4347eceb8d8d88
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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. While no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect users to malicious content, likely a phishing page or a payload download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/strik?utm_term=ipad+mini+2+case+with+screen+protector PDF link annotation
    • http://totalcreditreport.info/dewafitudadodununo00ep1.pdfIn PDF document text
    • https://cdn.sqhk.co/rufopunuk/gjXKgdw/97470674365.pdfIn PDF document text
    • http://4escam-bot.online/basic_concepts_of_democracy_quiz_answers7npho.pdfIn PDF document text
    • https://cdn.sqhk.co/juwafajem/jigrlhg/98429706587.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486965/normal_5fdd9e5e89ff0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379603/normal_5fdcbde8f0645.pdfIn PDF document text
    • http://tepuragebu.iblogger.org/jason_scully_grapplers_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/higQcje/super_mario_bros_deluxe_gameboy_color_rom.pdfIn PDF document text
    • http://kekebum.22web.org/ielts_exam_preparation_vocabulary_flashcards_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/latufenaw/73261558008.pdfIn PDF document text
    • http://lorajazibosiner.epizy.com/bozivogipotonobi.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/lirebukukomemidilebesolaz.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/bawid.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/vexupodinogobewowedumasar.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/35828769620.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/63433958723.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D3 5232 bytes
SHA-256: 885e1cb78bb9345f3252a854ed20b5518b1015c766aa3d54b074307adc5b4772
font_01_sfnt_off00010674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10674 11016 bytes
SHA-256: 2829e50d86a23867ab0c5707f50c9a3dfcd281881abc2bb20b402bc88d355d8a
font_02_sfnt_off00012bd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD1 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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