Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6bf2ddbd0708698…

MALICIOUS

PDF

63.4 KB Created: 2020-12-23 03:08:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ca25fd0f9903649cfaef6f085bb66334 SHA-1: bdcec5a15239a9968336c50f9cc57d5ca99cd33c SHA-256: c6bf2ddbd0708698275c4f3f9b897cb35009a565e787d1fce03373952e87dcda
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 0.9998

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://traffnew.ru/123?utm_term=western+civilization+powerpoints PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377407/normal_5f985303b96b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421330/normal_5fa8ef5b8a2eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490123/normal_5fcd7f7c4a108.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/vonusirukete/60623435480.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/naxunotujuz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3001baffbf90a66f82eea/t/5fccc6ecc836a917f90a6d28/1607255788795/cash_day_loan_app_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/html_css_fixed_header_footer_frame_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/ielts_listening_total_health_clinic_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/mcent_browser_app_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/wibisebipogizedimisesuxo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5515dea4a794d56626c14/t/5fc63a3b5147b1480406a71f/1606826556608/beginner_woodworking_classes_austin.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe26e1a6b7d2f0320c5d9c7/t/5fe281f07007e84dc2cf2e33/1608679920714/pinubifefupusukopepuv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a58c40f1034a5cb42298/t/5fc6f0872ac13f1ee9ad69d6/1606873224452/jigonuwus.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/vitugar.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/corset_under_formal_dress.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_off0000bb87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB87 5140 bytes
SHA-256: f587dfe77f0f0a8546279b49509ae1eaf61b944588d31191f75f3522686f2503
font_01_sfnt_off0000cd36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD36 10268 bytes
SHA-256: 04ddf1a01c5f406892fc625ade0e816c32b0f5776f4057b7a6d7ab3648598dfb

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