Malicious PDF — malware analysis report

Static analysis result for SHA-256 3453fde418c297a8…

MALICIOUS

PDF

75.4 KB Created: 2021-03-25 00:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8013d50845535266ef01cbf8f6aa08a2 SHA-1: 7617247f4aadf92fbc0084088808350d4890bd0b SHA-256: 3453fde418c297a892b5a12ff6d741f4fc3ca06333e272a0e6826265dca70d28
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://xezojetit.ru/award?keyword=elantra+2020+brochure+pdf', which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to an 'Elantra 2020 brochure pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xezojetit.ru/award?keyword=elantra+2020+brochure+pdf PDF link annotation
    • http://2220202.ru/suvodusuramutefiwimal7l16.pdfIn PDF document text
    • http://poputitekokukad.iblogger.org/3399184824.pdfIn PDF document text
    • http://bagidopivulo.mywebcommunity.org/sadefalasewu.pdfIn PDF document text
    • http://guzexesuge.mypressonline.com/calendario_calcio_serie_a_2020_19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474989/normal_6003ef385311f.pdfIn PDF document text
    • http://benaletuzulug.sportsontheweb.net/88908571879.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368741/normal_60323860318dd.pdfIn PDF document text
    • http://world-wildshop.com/srs_approved_investment_products5o0uw.pdfIn PDF document text
    • http://znakomstva69.space/dnd_5e_alchemist_class9ob53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478393/normal_5fe195b6e19cf.pdfIn PDF document text
    • http://hookup753.fun/kevepuvofupolezigofemgivnm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465151/normal_5fcf2c01dd1f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://juguxawe.rf.gd/85165892816.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/what_is_management_by_exception_in_managerial_accounting.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/pure_apk_vidmate.pdfIn PDF document text
    • http://kavanovadegutok.rf.gd/53464590711.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/foxifepawodobuzabuz.pdfIn PDF document text
    • http://vagakidid.epizy.com/konasor.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/90177775431.pdfIn PDF document text
    • http://tivakifuzir.atwebpages.com/xulijiwazatuxijofutepi.pdfIn PDF document text
    • http://pekafujojef.onlinewebshop.net/zonekuganafoze.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/vigifomuwupenamenitowu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC57 5436 bytes
SHA-256: ce1c1e9e32e36d171cee35b409d3c6b983818be9c2fc82326878c27c8fae824d
font_01_sfnt_off0000dec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC7 14944 bytes
SHA-256: f690ba4737da7be894fca7d3affc06ea3d8c92f0c8e2dbc300a02ff7ea550b7b
font_02_sfnt_off0001095c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1095C 16172 bytes
SHA-256: 461a1578f80084b2f2ca998a6e716936969cc9b33b2976d66eaaa57f6abee57a

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