Malicious PDF — malware analysis report

Static analysis result for SHA-256 853e3b4147280aba…

MALICIOUS

PDF

79.1 KB Created: 2021-03-02 03:17:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a2f7ebca71a092aaa997fe7a8df02802 SHA-1: 5e90407bb929964e721f842f7f6da84a09b7ef02 SHA-256: 853e3b4147280abafb2309ff6c8e4b88305bf0c3b8133d61608935336d6a93d3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

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://midufefew.ru/strik?utm_term=some+basic+concepts+of+organic+chemistry+notes+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485015/normal_601ed4fde5891.pdfIn PDF document text
    • http://avto-document.site/35553189735goo6d.pdfIn PDF document text
    • https://toviladul.weebly.com/uploads/1/3/0/7/130776498/suxebudapasivij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465277/normal_5fdcd7251bc75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391896/normal_5fcb1da5f0d4e.pdfIn PDF document text
    • https://revafabeku.weebly.com/uploads/1/3/4/7/134708131/ab9fa9867929bd.pdfIn PDF document text
    • http://btsworld.org/949715784725jc3l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408989/normal_600520b9061d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462708/normal_603d72a0324a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402252/normal_5fceb1d3c6b92.pdfIn PDF document text
    • http://revershjtb.site/99665973965s39w6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383149/normal_603249db923f1.pdfIn PDF document text
    • http://ketadiets.site/takidenuygfe6.pdfIn PDF document text
    • https://jesipawuba.weebly.com/uploads/1/3/0/8/130874316/pisoteladu.pdfIn PDF document text
    • http://itayoga.space/conair_trimmer_not_workinge84hx.pdfIn PDF document text
    • http://cetapp.xyz/uniden_bearcat_trunktracker_iv_bcd996xtah54q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475853/normal_600b06a8c4432.pdfIn PDF document text
    • http://dmdmassage.com/hp_5520_printer_wireless_setup2lhuv.pdfIn PDF document text
    • http://reduslim-ordina.site/afrikaanse_idiome8b7iy.pdfIn PDF document text
    • http://winwites.space/mandatory_reporting_laws_for_nurses2pd3y.pdfIn PDF document text
    • http://micrometerdigital.xyz/bahnschrift_condensed_bold_fontl021m.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D4 5884 bytes
SHA-256: a0498c07bf940df35cedc310f2a89c031b2f4d85864a7854becf0646734e0a33
font_01_sfnt_off000109ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109AE 10740 bytes
SHA-256: bb7f5b8a772bc168d0fec336c2684e6052095ef01fb103c6c1d797b2cb5cb553

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