Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e3d0b5d452f5d25…

MALICIOUS

PDF

68.2 KB Created: 2021-02-25 03:57:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d4957cba0ee1ef8c8b7585a7a895a22e SHA-1: 273a014a0fdd39743d8a3cbe0c207803eb692c60 SHA-256: 5e3d0b5d452f5d25fd5120162f8f04cc8bc36a36e0ba85c6fc09a912d38e95fa
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/award?keyword=excel+2007+exercises+for+beginners+pdf PDF link annotation
    • http://dogoderusokita.iblogger.org/tugatubom.pdfIn PDF document text
    • http://rutekotugu.22web.org/welding_merit_badge_pamphlet.pdfIn PDF document text
    • https://cdn.sqhk.co/muwitajo/wicYLeR/63749910757.pdfIn PDF document text
    • https://laropavo.weebly.com/uploads/1/3/4/5/134585926/b8e701c.pdfIn PDF document text
    • https://zoluwapipapak.weebly.com/uploads/1/3/5/3/135321816/5985121.pdfIn PDF document text
    • https://guxenebulofoto.weebly.com/uploads/1/3/2/8/132814975/wudozuxarexane.pdfIn PDF document text
    • http://domainlimax.xyz/gagivedatuzatakulegoxili0gtgr.pdfIn PDF document text
    • http://limecash.xyz/ketovotojakorl7bci.pdfIn PDF document text
    • https://cdn.sqhk.co/fimirexuf/Imugeic/helicopter_crash_egypt_peacekeepers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rixexoto.rf.gd/modelo_recibo_de_arrendamiento_sunat.pdfIn PDF document text
    • http://redexini.epizy.com/99356856918.pdfIn PDF document text
    • http://gorefoverotiw.epizy.com/italian_pronunciation_guide_c.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_off0000ccc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC2 5632 bytes
SHA-256: 62ccf723679cdd489b647d35d184b34b4c8654a5bae22209fe16eb04aea3e504
font_01_sfnt_off0000e012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE012 10560 bytes
SHA-256: 46a280f0e79480671f9467d4f02f8baeb7cb61f186cedbf68b9c95a240df26fc