Malicious PDF — malware analysis report

Static analysis result for SHA-256 7294379b36c89286…

MALICIOUS

PDF

77.4 KB Created: 2021-04-28 10:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b7ed75efe5f8efa901bbad291b5554fa SHA-1: 9a9342e184bbbe732b4db87c6449ccb23d6a35aa SHA-256: 7294379b36c89286beaa2aa96d9a1e7811c1e552870125515c207defe0e1d604
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://xajibur.ru/strik?utm_term=best+cordless+phone+with+answering+machine+and+3+handsets PDF link annotation
    • http://tiktoktop.design/dan_the_man_apk_uptodownisua2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418584/normal_604d01b1d440a.pdfIn PDF document text
    • http://vpntop.info/mezezodofisokojogakinesudjter0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417806/normal_60512f91e6588.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473651/normal_5ff78fb55c4d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493579/normal_5fdcb4d873a32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497395/normal_6012fd95d2685.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426279/normal_5ffb66ee7e721.pdfIn PDF document text
    • http://perevozka.ru/mapa_de_riesgo_de_una_escuelarry3g.pdfIn PDF document text
    • http://gatorama.site/maha_powerex_c9000_reviewqre8p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402953/normal_6065ce46987b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365639/normal_60021d4c372df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413585/normal_602ae2ddb8dac.pdfIn PDF document text
    • http://lg-copyrightforms.com/does_riba_allowed_in_islamzy55j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389604/normal_5fcf156b9fc73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386091/normal_5fd7abb602a82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381529/normal_5fee7e43416e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487191/normal_6036b65a57c73.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ef51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF51 5792 bytes
SHA-256: 8cf602c4cde778018af326434ec87247e9a47f66d551c13f6d2f3ffec23474df
font_01_sfnt_off000102f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F4 10896 bytes
SHA-256: 80a4c4dc8d37dbb666ac53236c09f6ab99101f0099e4a24a52852e3df819a509

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