Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfc5569346c8f66b…

MALICIOUS

PDF

73.8 KB Created: 2021-02-21 16:20:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e0d1aeaacd118a8d90cb0ea1b266e75e SHA-1: b349ef3e2563a7714d422ab877c8da10d91546c0 SHA-256: dfc5569346c8f66ba81f177f29675b439d35410c4850c559b0756189891cafe8
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'cyberpunk worth it xbox one' and embeds a URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to a malicious site.

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://bologen.ru/aws?utm_term=is+cyberpunk+worth+it+xbox+one PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413467/normal_60297322bfb94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448339/normal_5ff858da9f2d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402940/normal_60013aa13bbc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443617/normal_602dfa8b29fab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://modedavap.epizy.com/apraxia_constructiva.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/vafinixifekixuro.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/teacher_s_guide_math_9_module_5.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/44626324997.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/59138074213.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/latest_android_version_for_samsung_s7.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/botesopemuradadewu.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/vinibejasamutopa.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/romeo_and_juliet_act_1_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/jovujojusalevitafulomujol.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/balliol_lower_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/zokisibejulobuvuramalof.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_off0000e681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE681 5184 bytes
SHA-256: 08c7e6b077fdaf99f41cc2d53cdc4798fcb57ba99a4de603f9343451b0b9a314
font_01_sfnt_off0000f83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83A 10020 bytes
SHA-256: a376147d62160f0272385cb52de918f8918c3f6541d5291b82c23aad576388bb

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