Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbe3284f188e699f…

MALICIOUS

PDF

70.9 KB Created: 2021-02-19 02:12:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b0050de3fa37ae6cd63a49ca10de9c73 SHA-1: 12dd46a96d2e606f9f693a6243599afc7206bbcc SHA-256: bbe3284f188e699f63b1a00ca7907fa533a3cd05ec1b6552adc112476e7bf0c4
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, one of which, 'https://bologen.ru/strik?utm_term=brother+hl2170w+paper+jam', is likely used to redirect the user to a phishing or malware distribution site. The PDF structure and embedded URIs are consistent with phishing campaigns.

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/strik?utm_term=brother+hl2170w+paper+jam PDF link annotation
    • http://espaceabonne.com/befukanawijolojidujajuga05f6g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456686/normal_5fec39f989481.pdfIn PDF document text
    • http://didavixakodix.22web.org/sekabufadide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401732/normal_5ff2606b29d81.pdfIn PDF document text
    • http://itasummer.fun/73667858877ejb28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489422/normal_5fcd356beb4a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485436/normal_5fd83f7f7cc8e.pdfIn PDF document text
    • http://chambrehub.xyz/fujapakewokigiturjc6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383913/normal_5fda15ad894d4.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/punagilelabon/incisional_hernia_repair_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/remedies_available_for_breach_of_contract.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/romeo_and_juliet_character_chart_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/fusigijadovipen.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/how_to_change_font_size_on_a_p-touch_label_maker.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_off0000d8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C0 5504 bytes
SHA-256: 472de3925cae4a2bece009f7ab58c3557ddc08b619c3e516119b545260895e85
font_01_sfnt_off0000eb6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6C 10348 bytes
SHA-256: b38664681dcfd3490c04d57649553e811d80d335c7490b4e58e01e9fe89a04ae