Malicious PDF — malware analysis report

Static analysis result for SHA-256 c490680e34855ab3…

MALICIOUS

PDF

81.2 KB Created: 2021-03-03 08:42:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 021f78cf1146e388f3092a747e003ac8 SHA-1: 32c98b7110b98de834c9fe8c852aef5e9a469b49 SHA-256: c490680e34855ab30684659242906c39ca604d829f93e9306efdb1f9461869b2
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://gimoguvi.ru/strik?utm_term=made+to+stick+book+in+hindi PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485570/normal_600c58b0ccd57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375694/normal_6005e3e68cf41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446638/normal_5fdd0d1d35622.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412568/normal_6020728169e17.pdfIn PDF document text
    • http://muwilagugo.iblogger.org/rikebitinaje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453721/normal_6032f2f483723.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494866/normal_603daf346ecfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445737/normal_5fdb870700502.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/banula/parvati_mata_ki_aarti.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/preschool_behavior_chart_template.pdfIn PDF document text
    • http://lenixad.epizy.com/42140910333.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/12581338707.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/lanipezabopitezewa.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/46933607380.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/responsive_email_template_html5_code.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/hbs_730_manual.pdfIn PDF document text
    • http://feporomiwa.rf.gd/holy_cow_this_sheet_cake_is_amazing.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/43900428329.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_off00010134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10134 5108 bytes
SHA-256: 43aabdab1bbb3683a7409efaf5e6499030ced025afb796adb51ae354ac6eb0ee
font_01_sfnt_off000112a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112A0 10956 bytes
SHA-256: bea7e92a10e115ed1fc41b7ed875ceddb043a8c9a96e7dc6b8ab6f41704095e5