Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e15b93de0537c7a…

MALICIOUS

PDF

72.2 KB Created: 2021-02-16 16:47:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 61580951f771d29c4def0ae571890a04 SHA-1: a2e7d6b004afec3b8f065704e7c50a2d310775f1 SHA-256: 4e15b93de0537c7aa8f4b12b8a0a1252f4af9c87728c1d61eb03cc499a8b532d
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially corrupted, contains text suggesting a lure related to 'Ubee dvw32cb password location'. The presence of multiple external URLs, including one flagged as potentially malicious, points towards a phishing or malware distribution scheme. No scripts were extracted, but the PDF structure itself likely contains embedded links or exploits.

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://druttle.ru/strik?utm_term=ubee+dvw32cb+password+location PDF link annotation
    • http://wejnpowk.space/54788157049blqf5.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/capra_demon_guidernye5.pdfIn PDF document text
    • http://jifebaze.iblogger.org/minecraft_crafting_guide_latest.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471985/normal_600ee4997e3c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445128/normal_600e43fc39cd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387565/normal_60217ade24ed5.pdfIn PDF document text
    • http://1xbet-registr.site/herbivore_carnivore_omnivore_worksheetslw5pk.pdfIn PDF document text
    • http://fuwonetuj.22web.org/kuzapuxidaligopir.pdfIn PDF document text
    • http://ca-management.website/career_aglasem_alp_answer_key2t83a.pdfIn PDF document text
    • http://buylettersonline.com/nefodifelatamuwigotsj1k6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fopalew/14854420679.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/gutubekagafigixopureg.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/88025106607.pdfIn PDF document text
    • http://mexexumekevuk.rf.gd/33049935053.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/invitation_templates_free_online_word.pdfIn PDF document text
    • http://nenezonel.rf.gd/ielts_writing_test_practice_with_answers.pdfIn PDF document text
    • http://moraruvotu.epizy.com/steam_launcher_linux.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_off0000cf27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF27 5436 bytes
SHA-256: 596c6df4725a8e7de319c68a6c8ce98f160f8682cbf4db459037c712b6fd43b9
font_01_sfnt_off0000e1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B0 10848 bytes
SHA-256: 54f47e075a5a32005224950ee46288b90640c6953ef304300c5939f5d4ff0a1c
font_02_sfnt_off000105d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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