Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84f32e640d6b1b7…

MALICIOUS

PDF

77.2 KB Created: 2021-02-20 21:15:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 42a33020f71168d17d61a8ad4f77568b SHA-1: 6b217d73749e2f9b243512bfa0bed1906b3f8a01 SHA-256: d84f32e640d6b1b7c3b3d3af7eec6fb8c847a42b0b1c15fd46136a29f4a6faa1
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 0.9997

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://jacksth.ru/123?utm_term=lds+general+conference+october+2020+listen+live PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455901/normal_5ff7715a1279a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407331/normal_60075beeb8720.pdfIn PDF document text
    • http://befakupamexi.iblogger.org/66636584832.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368486/normal_5ff491b8f2861.pdfIn PDF document text
    • https://wedikeme.weebly.com/uploads/1/3/1/6/131606111/a9e1b61e84fe09.pdfIn PDF document text
    • http://xutuvulamarav.iblogger.org/automation_production_system.pdfIn PDF document text
    • http://befodafojedugan.22web.org/gerund_as_a_noun_worksheets.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389366/normal_60126d821a8b7.pdfIn PDF document text
    • https://tigigedilopufam.weebly.com/uploads/1/3/5/4/135400960/lonetilivafu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412999/normal_5ffe8b02254d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454821/normal_601e7be9d1654.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kaxumepidigiwe.rf.gd/del_mar_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/chemistry_classifying_matter_answer_sheet.pdfIn PDF document text
    • http://borobosen.rf.gd/agricultural_research_proposal.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/blue_coat_proxysg_administrator_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/zomozamejeposupeti.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/bixolon_slp-_dx420_driver.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE473 2192 bytes
SHA-256: 16ff826bb9ff509738d6d9089a31f020bdb01a885c901a0d33d101898c7f6018
font_01_sfnt_off0000ee80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE80 5604 bytes
SHA-256: 31db5fcaf87c10c5cc0a2e7c0f023a344680eb524ea9746da19214611098bcd8
font_02_sfnt_off000101ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AD 10852 bytes
SHA-256: 6388ff716540355a535b9dd48f988b5e06655e3134c12f2b70e0dc64ebc9b12c

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