Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4fd629284eda4ba…

MALICIOUS

PDF

163.1 KB Created: 2021-03-24 01:53:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 597abd71da7c9eaa0282fd8808cf4a78 SHA-1: e2c14f05cf36adc619a52ce5b1726c5be7d53883 SHA-256: f4fd629284eda4baff2152e1d90cdad53c7958d5b2ff601724a427622cb49cec
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://maypoin.ru/wix?keyword=corrupt+tower+persona+3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403540/normal_6015c1bcc081e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417423/normal_60318d42993b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_600a887c14849.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449417/normal_605950cd12e0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420776/normal_600736fba64b7.pdfIn PDF document text
    • http://mizebojusur.mypressonline.com/nakugubelubogodobokixoda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384628/normal_600da39ca1c9a.pdfIn PDF document text
    • https://cdn.sqhk.co/rixutixim/hl4jajd/zuzumomibajejumejofob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479451/normal_5fdc58552ed26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425255/normal_600099a2b65e7.pdfIn PDF document text
    • http://matawobedopikam.mywebcommunity.org/20614310945.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485309/normal_5ffaafc2d0401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467300/normal_603ff408bd423.pdfIn PDF document text
    • https://cdn.sqhk.co/givukugitewe/caiaJjd/66648072750.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451950/normal_5feebd1f6b82d.pdfIn PDF document text
    • https://cdn.sqhk.co/merabuvi/DgdAORy/xokenitupomosatokutalo.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/voropa/kintex-_7_xc7k325t-_2ffg900c_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/how_to_disable_car_alarm_without_key.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/1530495791.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/compare_differences_between_2_excel_sheets.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_off0001e3bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E3BC 31592 bytes
SHA-256: 7e7be4f7dff8424227b626fd9144c8379aaa55ee69c833c03ec739f4a998f3cc
font_01_sfnt_off000245d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x245D8 4940 bytes
SHA-256: d9dc6bc73c1849ed138c054347cebf6e490e178ca1c16b701037afbe64b596c7
font_02_sfnt_off000256c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x256C2 11760 bytes
SHA-256: 7551c3f758bb9976854a415702633e9f5fb97a50bd1c81b54b3f045a44849212

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