Malicious PDF — malware analysis report

Static analysis result for SHA-256 b019e2d30c9f7e65…

MALICIOUS

PDF

79.2 KB Created: 2021-02-15 13:42:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: dda24bf755d41f438296e5166dc7bb0e SHA-1: 5d84e83952ae0974e10650e808d3313e2bcdf90f SHA-256: b019e2d30c9f7e659fb762def99669c92987c35422003e33b1c41f5acc874893
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result, likely intended to trick the user into visiting a malicious site. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI are indicative of a phishing lure.

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=what+was+life+like+for+a+groundling+in+the+elizabethan+era PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446651/normal_6025591176026.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453118/normal_5fc9600f1c088.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489839/normal_5fef69cad96a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491445/normal_5fc56e6553b94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483623/normal_5fca7fa5ef7e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_5fd847c664e6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389792/normal_5fe1b9c2c1bce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480581/normal_5fd988eac344d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418991/normal_5fef8c361aadf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481994/normal_5ff76a6d026ea.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/jubiferekaka/84865454358.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/audit_procedures_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/character_education_worksheets_middle_school.pdfIn PDF document text
    • https://s3.amazonaws.com/popisiburewixuj/wobunowefiweputuxake.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/eraser_photo_editor_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/snow_report_alpe_d_huez_webcam.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/39118402668.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/miwemiwupexipevaneluj.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/ambari_kannada_movie_full_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/kupilodilutisuvakitigimo.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_off0000f69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69E 5528 bytes
SHA-256: 196195baec74ad84b6a6e4834ca25b35c50ccfa0a68d76411ac06ff8e183d79b
font_01_sfnt_off00010986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10986 11124 bytes
SHA-256: b803b8ca045b22ec21533a52c532544f202194d7c918e1cfb7174b96d5516075

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