Malicious PDF — malware analysis report

Static analysis result for SHA-256 19ba7d0259865e62…

MALICIOUS

PDF

82.0 KB Created: 2021-02-14 04:25:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0e20f85795434d2e689f21b1452b31d4 SHA-1: 041f0ff3f5064c21677f3cbf626083d8dc48c0e2 SHA-256: 19ba7d0259865e62df407a9b94e77ab93c0355fb776abcc7193bfcea00f421a3
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is associated with phishing and malware distribution. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document is designed to trick users into downloading a password-protected archive, a common tactic to bypass security scans. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or trojan delivery.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://crophysi.ru/wb?keyword=ccproxy%207.%202%20free%20%20with%20crack In PDF document text
    • https://static.s123-cdn-static.com/uploads/4451355/normal_6007b2b22cbb4.pdfIn PDF document text
    • http://dfahsdfgjsfg.online/livro_amantes_para_sempre9ob11.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/78ZTI0Z/man_lost_in_catacombs_found.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390637/normal_6009ac26a1b15.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475208/normal_5feed96fdab45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485016/normal_6012b258d294f.pdfIn PDF document text
    • https://cdn.sqhk.co/gupikekarobo/0ihhfcF/gowujefosi.pdfIn PDF document text
    • http://thesimplycompleteseries.com/717794165696nuze.pdfIn PDF document text
    • http://newyearshop.site/college_football_championship_2019_highlightskfk7l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479235/normal_601ed9b3d7ad4.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/Njhs9mR/jstudio_ide_for_java_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/jaridig/cute_cartoon_christmas_cat_wallpaper.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/pivetuzadujo/rikaxevuroviwudi.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/calendar_august_2019_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/mobogenie_for_windows_8.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/tegemenovipipituvibi.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/black_lace_up_platform_heeled_boots.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/95780612033.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/video_bts_idol_performance.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_off0001016f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016F 5368 bytes
SHA-256: 8041bcc29e90feca0fcc5ff92300e3e0546fce7855e4964e911d68e1b237788c
font_01_sfnt_off000113d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D9 11904 bytes
SHA-256: 2d1335386dccf538c161e29861adace21d2bd780b2fbc3120bd58d29928ecdb4

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