Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1f15c0d547d6061…

MALICIOUS

PDF

72.3 KB Created: 2021-02-13 03:52:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e971cf7db78582739f035726c2470416 SHA-1: 540a9ea5a9d6c97e543c9ab75fe180f89759df98 SHA-256: c1f15c0d547d6061e56da38d5d0e541d6695106fd1e2e480de9969abe94c3ef9
126 Risk Score

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/wix?keyword=let%2527s+be+rational+implied+volatility PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454691/normal_6023cb3bdbfbe.pdfIn PDF document text
    • http://wutugavefezaza.22web.org/fotodomezedogid.pdfIn PDF document text
    • http://netlysy.online/rci_2950_modsyi25a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368485/normal_5ff01075bf3d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369904/normal_6019b932ace2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380882/normal_6002980a8ea34.pdfIn PDF document text
    • http://baugroup.info/624802543954msa2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386609/normal_5fffc6c6c6f4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421639/normal_5fe91b5de9369.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428331/normal_601ba7a5e2c1f.pdfIn PDF document text
    • http://metinozub.iblogger.org/cda_book.pdfIn PDF document text
    • http://taptopbot.com/zaliramunapotepowadjpddk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420743/normal_60235605473ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391620/normal_5fefc0aaa1dd2.pdfIn PDF document text
    • http://55571.ru/coyuchi_organic_sheetsbly2x.pdfIn PDF document text
    • http://jegotaraxipux.iblogger.org/92844590684.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ninoxubus.rf.gd/emergency_department_coding_guidelines_ppt.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_off0000dd00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD00 5380 bytes
SHA-256: 64fa039ad558e78ee7e8c3db7c9cdf20984a1a2c5ce58fe8e4959ecc5d8a6a32
font_01_sfnt_off0000ef44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF44 11016 bytes
SHA-256: cb5745c67e5b1f9d1371dbf154b89c8268b6aae7602da89ce7aeb1d94ece1476