Malicious PDF — malware analysis report

Static analysis result for SHA-256 32efabe963a7d7a4…

MALICIOUS

PDF

75.6 KB Created: 2021-01-19 04:04:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 426a427e5d81a3fde657e465d292778f SHA-1: 33b073f657d1dcac71575c41349ffe10da3e5e81 SHA-256: 32efabe963a7d7a464e787ca54d373b935956a5d76e37215a8798516661902ce
184 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
  • 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.
  • 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.
  • 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://yafferge.ru/wb?keyword=spectrum%20cable%20the%20cw%20channel%20number In PDF document text
    • https://static.s123-cdn-static.com/uploads/4374696/normal_5fcb8dd661e0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389384/normal_5fe7f29a9654f.pdfIn PDF document text
    • https://site-1247108.mozfiles.com/files/1247108/lol_illaoi_guide_s9.pdfIn PDF document text
    • https://site-1186310.mozfiles.com/files/1186310/xosemejoguwobotax.pdfIn PDF document text
    • https://cdn.sqhk.co/tuledapozato/dZhihci/abcmouse._com_free_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484635/normal_5fe19712737d1.pdfIn PDF document text
    • https://site-1246605.mozfiles.com/files/1246605/40356047916.pdfIn PDF document text
    • https://gajonido.weebly.com/uploads/1/3/4/6/134627921/a14c85.pdfIn PDF document text
    • https://site-1179415.mozfiles.com/files/1179415/drilling_stainless_sheet_metal.pdfIn PDF document text
    • https://cdn.sqhk.co/pozigafo/shi8lyI/7503734677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386830/normal_5f9278adddf7d.pdfIn PDF document text
    • https://cdn.sqhk.co/jagakutojut/ar6jdjc/35072118493.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gagutaxu.rf.gd/466427959.pdfIn PDF document text
    • http://pepebejawu.epizy.com/73535937105.pdfIn PDF document text
    • http://sonisan.epizy.com/dan_and_shay_speechless_piano_sheet.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_off0000e9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D7 5328 bytes
SHA-256: 8fd3243c155cee16c413901d6465fd7d11d7b3d0814dc7571d3e04e856fbe812
font_01_sfnt_off0000fbd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD8 11016 bytes
SHA-256: fc46a87c075fa0524c671470fb869649b59eea3eb919ee7d68dfed74545b211b