Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd7d228ca5cedb93…

MALICIOUS

PDF

76.8 KB Created: 2021-03-12 05:31:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 86e2da29edae7a570345d5716aca5b9a SHA-1: be923a8ceb739e727eb4491f8b2f34679384ae85 SHA-256: bd7d228ca5cedb93e659c13f5fa2ae9bfcb5f6b7fade6a8ccb549400450c8f3b
96 Risk Score

Malware Insights

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

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://vilenefex.ru/award?keyword=copernican+revolution+kuhn+pdf PDF link annotation
    • https://cdn.sqhk.co/tofatuxurejo/8giy3ha/dozupo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443598/normal_5fc93fb47c656.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_6012cb07d9f1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376625/normal_5ff144ef347a3.pdfIn PDF document text
    • https://cdn.sqhk.co/poturofivat/ig6hjig/furniture_mod_for_minecraft_1._16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496402/normal_5fc8365887c28.pdfIn PDF document text
    • https://cdn.sqhk.co/zikufivol/i2I0jhe/62389668380.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408879/normal_5ff9acb25369d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417413/normal_602d890ea4236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378604/normal_6019f1058bed3.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/48777221821.pdfIn PDF document text
    • https://nudilosi.weebly.com/uploads/1/3/4/5/134527742/065258fc48ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466680/normal_5fce874b3ebf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377663/normal_604861adc283f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377414/normal_5ff679892d0f0.pdfIn PDF document text
    • http://metoxegid.mygamesonline.org/lilivatuzipolasutumixik.pdfIn PDF document text
    • https://wegedojilo.weebly.com/uploads/1/3/1/3/131398291/tepipodulexaw-gejabiruw.pdfIn PDF document text
    • https://nuxaluvuwij.weebly.com/uploads/1/3/5/9/135997537/jiniduwane.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/jFYhaSf/tulagigeta.pdfIn PDF document text
    • https://cdn.sqhk.co/famazipow/ZjgggWx/the_battle_cats_tier_list_maker.pdfIn PDF document text
    • https://zirakamu.weebly.com/uploads/1/3/1/3/131398357/3699304.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/jinabom/kibulawemuxus.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/38557278365.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/la_crosse_weather_station_remote_sensor_not_working.pdfIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/schumacher_xp2260_charger.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/bonokevogenubeva.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/85599534154.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_off0000f007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF007 5092 bytes
SHA-256: 7fef53410549d6594b5034aaf8914a39074e033103cade6b9ba9a25c2463712c
font_01_sfnt_off00010156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10156 10476 bytes
SHA-256: dc7c4283fc8862f35c36c0a7882184256a3871308544a5c0ebbcc318fbe03bd7

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