Malicious PDF — malware analysis report

Static analysis result for SHA-256 15cc86b3d002a7d3…

MALICIOUS

PDF

74.1 KB Created: 2021-02-01 18:48:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5518403f20d2a92b2bd562542de0d179 SHA-1: 3268e09456d34a984388d8a19cfcc0873788ab31 SHA-256: 15cc86b3d002a7d3ee76a7f43e3ef181f2315216708d046b42388975086ec7a2
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/123?utm_term=kindergarten+kove+reading+street PDF link annotation
    • https://cdn.sqhk.co/voguzasijur/LgcR5BD/idle_death_knight_companion.pdfIn PDF document text
    • http://ita-fitness.fun/lidawutafazitebisepuxijuws29wx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417805/normal_5fff5ce3c6c8c.pdfIn PDF document text
    • http://ru-en.xyz/pe_power_exam_formula_sheet416kf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387929/normal_5ff47fda25e3d.pdfIn PDF document text
    • http://callipakk2.site/74456253911m93j6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527859/normal_600087175a4b3.pdfIn PDF document text
    • http://fosufupivufup.66ghz.com/bidete.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460255/normal_5fdf7612531f6.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/1aihjjg/63698208883.pdfIn PDF document text
    • http://proflist-kursk.ru/21492474735vb9ro.pdfIn PDF document text
    • https://cdn.sqhk.co/nuwalimo/iahfMhi/train_traction_control_system.pdfIn PDF document text
    • https://cdn.sqhk.co/noxibogalu/dggggic/91144837787.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/loneminovu/66998139582.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/3305045024.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_off0000e72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72F 5052 bytes
SHA-256: a0d7efa61e598fee2586b9dd1ead05b7eff1c02a0183128c37eb980f146c78d5
font_01_sfnt_off0000f874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF874 10316 bytes
SHA-256: 5fe301638484c736abcad4e83d5b69b802d31c7ef0fc74c55213ed60d5577e98