Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b35af70da1062b0…

MALICIOUS

PDF

62.1 KB Created: 2021-02-21 14:50:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1622d0d6988e52a32a6f7336788587b9 SHA-1: ee49d334dd38242dd223f0fad034dca64ad7cc1c SHA-256: 6b35af70da1062b0d3231a08a7fbb35da50bf0b6ef33bc786bdc8ca08e4c5afb
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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/wix?keyword=mua+ban+net In PDF document text
    • http://idealslim-ordina.site/182845961477vvxv.pdfIn PDF document text
    • https://rovoduwomu.weebly.com/uploads/1/3/5/3/135332400/rolorelotajusajoz.pdfIn PDF document text
    • https://wozukofa.weebly.com/uploads/1/3/2/3/132303282/losajunugikovuruv.pdfIn PDF document text
    • http://uscarins.info/ximabawxuw0u.pdfIn PDF document text
    • http://armlur.space/248810940708oysf.pdfIn PDF document text
    • http://easy-money-cash.space/binomial_probability_worksheet_ii_answerslqznw.pdfIn PDF document text
    • https://wufomuwu.weebly.com/uploads/1/3/0/9/130969972/4570958.pdfIn PDF document text
    • https://vasalidut.weebly.com/uploads/1/3/0/9/130969475/1233054.pdfIn PDF document text
    • http://chempion.coffee/nenikamawefuvujixexec9klq.pdfIn PDF document text
    • http://aycotoro7.xyz/94990169188rpj6a.pdfIn PDF document text
    • https://papukelub.weebly.com/uploads/1/3/4/6/134666119/fipaxixefu_vipofaxek.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/livre_electronique_de_puissance_gratuit06juq.pdfIn PDF document text
    • http://firstflirts.site/rekabikapemefiw36r7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pegesij.rf.gd/57509662658.pdfIn PDF document text
    • http://lusiromipu.epizy.com/zosoxodagezul.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/event_banner_template_ai.pdfIn PDF document text
    • http://pijularof.epizy.com/job_handover_letter_format_sample.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_off0000bb23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB23 4520 bytes
SHA-256: 6bb9212ca2739c0b3d5f1d0497ce0d2de206b460aa44be5bdd6b15ab131be481
font_01_sfnt_off0000caa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA3 10272 bytes
SHA-256: 5a05ab775dd6533f46a3ca56c64428c05e183ad71212283167a57ae55e689c09