Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a21c833f8c0624…

MALICIOUS

PDF

68.9 KB Created: 2021-02-20 16:09:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d741c744674c78232919de40e6d90b54 SHA-1: 9568e2235056e373f1055d621eca091c0ad5a13b SHA-256: 80a21c833f8c06248fa01b133948309d30f9eb1c7f8d5c85aec3fb466cb6f21c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by directing them to malicious content.

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://baarspo.ru/strik?utm_term=how+to+clean+a+waring+belgian+waffle+maker PDF link annotation
    • https://xiwabedosebu.weebly.com/uploads/1/3/1/3/131398066/88017.pdfIn PDF document text
    • https://zuxosudeti.weebly.com/uploads/1/3/4/3/134359900/doposarenabit.pdfIn PDF document text
    • https://sozawozoxo.weebly.com/uploads/1/3/4/5/134509422/4062058.pdfIn PDF document text
    • http://thepropheticapp.com/what_is_the_eat_fit_meal_planzzatn.pdfIn PDF document text
    • http://kuzojud.66ghz.com/91831921090.pdfIn PDF document text
    • http://nigoviwan.22web.org/brother_printer_dcp_t300_drivers_free.pdfIn PDF document text
    • http://cancandance.org/cost_audit_report_sampledlcj6.pdfIn PDF document text
    • https://munuteme.weebly.com/uploads/1/3/4/8/134862418/b661378f0b78d9b.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/xapijifas/tetutezi.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/golang_html_template_engine.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/guitar_tuner_ukulele_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/viibryd_medication_guide.pdfIn PDF document text
    • http://pobipegosaba.epizy.com/xebesezekokusuvoduvirebi.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/42_amendment_of_indian_constitution.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/23665211487.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/57072235503.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_off0000cf65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF65 5280 bytes
SHA-256: acfc4f92e849baf22b1abe3e38d2fbee742c44410690df8871e78af15a0a60c9
font_01_sfnt_off0000e160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE160 10872 bytes
SHA-256: 6d2d53d33a2bbf5c79b8b1ff10b1fccf349c87710746d91f01c3cf757ed726e1

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