Malicious PDF — malware analysis report

Static analysis result for SHA-256 7273539b7ad18503…

MALICIOUS

PDF

68.0 KB Created: 2021-02-16 02:15:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 5ba4a9b0c5f4e7d9d089ec76c542d44b SHA-1: 12586cda2e3c2bf4f2f492f5060f17a2e4f7edc1 SHA-256: 7273539b7ad18503a5586e65f2b70ff238957d4d29a06d5d5b69f6b7bdaedb91
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host a phishing or malware payload. The document body, though heavily obfuscated, suggests a lure related to a driver's manual, aligning with common social engineering tactics.

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://jacksth.ru/strik?utm_term=manual+del+conductor+de+maryland PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4381964/normal_5febcc809ff94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457008/normal_60167e0192103.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368227/normal_60028ebcaf016.pdfIn PDF document text
    • http://life-news.tech/multivariate_data_analysiss1d87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386829/normal_601d94eb45f88.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416806/normal_5ff5bb7e64d7b.pdfIn PDF document text
    • http://dnepr24.info/medical_tourism_guideghexu.pdfIn PDF document text
    • http://govnososal.xyz/applied_research_studyowpqy.pdfIn PDF document text
    • http://1pokypki.website/nusilugilejoj35pbn.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/fupanabivote/use_of_it_and_they_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/75059800812.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/34281339275.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/a1000_yaskawa_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/fofis.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/able_calendar_october_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/lafirusugexerivi.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_off0000ceac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAC 5012 bytes
SHA-256: 3f746d995dc7ed960837536733e13e34d9957a8bbd1ed2bcd5f314c2c01070b4
font_01_sfnt_off0000dfb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB5 10248 bytes
SHA-256: 4f4c544eac4d6566ec25b5dc155a5f82d4014ad069b8b092db6c1ebeee69bc3a

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