Malicious PDF — malware analysis report

Static analysis result for SHA-256 c566ceca7b1a6c7c…

MALICIOUS

PDF

75.1 KB Created: 2021-02-14 02:31:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 92b2b045f0b7758932a23b9f0fedb6d2 SHA-1: 5030916ebf80c5fbb9c6425898b651b866284833 SHA-256: c566ceca7b1a6c7c11ba2be8b3ad500388ac467f45276bcd7cc3e3f22af887b6
96 Risk Score

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://bologen.ru/123?utm_term=brisa+retractable+screen+door PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4418567/normal_600694fe6dd14.pdfIn PDF document text
    • http://prostosite.site/free_problem_solving_worksheets_ks2kh6n9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370068/normal_5fc8b3e6e9bd5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391649/normal_5ff4b56cb7ade.pdfIn PDF document text
    • http://stav-games.ru/zegimajx2xy3.pdfIn PDF document text
    • http://evgeniy-semenenko.ru/bimaborogekajiwonoverikaw3cbux.pdfIn PDF document text
    • http://ranking-se.com/jefagaxazgukdk.pdfIn PDF document text
    • http://healsmall.space/kozoragozofimafemizovcl57r.pdfIn PDF document text
    • http://awpmode.com/zekusd9f30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366040/normal_5fcbd6321409f.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/zuwosil/schlotzsky_s_app.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/39204821601.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/acido_acetico_usos.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/rikupuvimobemit.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/harry_potter_book_1_ar_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/60962847697.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_off0000ea1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1C 5120 bytes
SHA-256: 70cbd979a1dea36fea3f187bdaa0206603dcd4046ee92b6987dca33bd0296b13
font_01_sfnt_off0000fb89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB89 10468 bytes
SHA-256: 44d76a2c8c396c4e740f16731a3728f74aedc28fd2001336451c74ad832e4790