Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b75a3f8f41887c1…

MALICIOUS

PDF

82.0 KB Created: 2021-02-22 09:47:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f16617a108104bb3240a40ae7d66884f SHA-1: 9eee1e3f36c91372a842aad3078eca8082fcc9c4 SHA-256: 8b75a3f8f41887c17f648f4c4d1058e23f28de487421d23954dd616f33263f82
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, with a critical heuristic firing for ClamAV detection. An embedded URI points to a URL that appears to be a lure for a Dyson vacuum user guide, likely a phishing pretext. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/123?utm_term=dyson+ball+vacuum+user+guide PDF link annotation
    • https://cdn.sqhk.co/revinoxu/e0hfbOs/paypal_login_problem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404757/normal_5ff63a9e960be.pdfIn PDF document text
    • https://cdn.sqhk.co/jogeguzotire/hhjc7je/85561402914.pdfIn PDF document text
    • https://cdn.sqhk.co/jegamaxegev/Zib8ihy/fubamarimiganebor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448986/normal_6025c11fdc3ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487905/normal_5fe7551fd7719.pdfIn PDF document text
    • http://titalat.iblogger.org/wosofesuwupowubolovow.pdfIn PDF document text
    • https://cdn.sqhk.co/mowogibewu/GXTPhii/bovopowawupowubus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xepujeroniwazip.epizy.com/metformina_850_usos.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/50520645065.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/bmo_field_seating_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/human_body_pressure_points_chart.pdfIn PDF document text
    • http://tamedigozetot.epizy.com/gigebotiberiwas.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/disufipolute.pdfIn PDF document text
    • http://verovaweroxuxu.epizy.com/2614385693.pdfIn PDF document text
    • http://zexizel.epizy.com/arshinagar_bengali_full_hd_movie.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_off0000ff19.bin
029661130f7ceb5e8a9e72f3a3072fa4df75994d858be318a0e1495a5fd69ffc
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF19 5560 bytes
font_01_sfnt_off000111fd.bin
13e4a070ea2086683c419f22a522135241610bd491ee29d33b5312f97165059d
pdf-font-stream PDF embedded font (sfnt) at offset 0x111FD 12076 bytes