Malicious PDF — malware analysis report

Static analysis result for SHA-256 4599bdc4692dc9c1…

MALICIOUS

PDF

66.3 KB Created: 2021-03-01 15:13:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fc44be8418ac2d571f3d40ed501f53e4 SHA-1: fa6b591707c3983cc134935c505a3a9a4d2761bc SHA-256: 4599bdc4692dc9c1edc7e1f3136661fd79569af09a58afa2b19269198b4c068b
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://xezojetit.ru/award?keyword=herman+miller+aeron+craigslist+atlanta PDF link annotation
    • http://iminn.ru/what_makes_a_good_literature_review_dissertationvsw13.pdfIn PDF document text
    • http://ins.expert/mobitel_free_paid_data_packages2dm80.pdfIn PDF document text
    • http://kvrovk.xyz/bivuk9bety.pdfIn PDF document text
    • http://bestsalestoday.xyz/best_law_books_in_pakistan1rz8t.pdfIn PDF document text
    • https://cdn.sqhk.co/ravawiku/jGicJgi/99904527740.pdfIn PDF document text
    • http://capridigi.com/6650966385sxl27.pdfIn PDF document text
    • http://taher-tcac.com/polar_covalent_molecules_worksheet_answerstvgew.pdfIn PDF document text
    • http://rrrrkkkkk.space/21998140928cg7wf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458148/normal_602c527c69f9d.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/hfha5if/rurexugekik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415930/normal_5fd1dfced9aaa.pdfIn PDF document text
    • http://myfirstsite.xyz/ant._com_video_er_toolbar_anttoolbar._dllwqijb.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/juwofuxufijup/commercial_cleaning_schedule_template_excel.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_off0000c9c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C9 5080 bytes
SHA-256: 2edf6549507b9d2c56cbfb5e68b0bd9c2531126b2452510bcaabd405932fc120
font_01_sfnt_off0000daeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEB 9844 bytes
SHA-256: 9067c2788d2b5433ba53936df2b550d7d80d7152730ed4519e81b6132ea3aa8d