Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c86cbcd2f3a9aad…

MALICIOUS

PDF

72.8 KB Created: 2021-02-07 09:33:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8e919ca1a9c4a7080f900d88c2fe0545 SHA-1: b89a195c36e63b185e73402ab8dd934aed579a42 SHA-256: 1c86cbcd2f3a9aad1e4993f82a231e3508bb801dc497b5461491180073e3b196
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/wb?keyword=facebook%20video%20chrome%20mac PDF link annotation
    • https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/617433.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujutenifo/AjijgKe/new_tiktok_tok_video_clips.pdfIn PDF document text
    • https://sasadonosixez.weebly.com/uploads/1/3/5/3/135332683/tetivipa-newiwipilepo-pebufasiz.pdfIn PDF document text
    • https://cdn.sqhk.co/sizozizaj/rFKjdhg/48098328643.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/ajio5hj/suzibixusekoz.pdfIn PDF document text
    • http://stc-l.ru/assessment_with_the_wais-iv_sattlerr75aa.pdfIn PDF document text
    • http://justamorem.com/conception_2_ending_guide64l3t.pdfIn PDF document text
    • http://center-san.ru/922313176289pfoq.pdfIn PDF document text
    • https://mosezogojufotu.weebly.com/uploads/1/3/0/8/130813841/5032428.pdfIn PDF document text
    • http://wawovotem.22web.org/gamoluxisukob.pdfIn PDF document text
    • http://registrat.space/45272586202wr5fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zekovulelopur.epizy.com/best_talk_back_app_for_android.pdfIn PDF document text
    • http://mexowotevofo.rf.gd/business_card_design_cdr_file_free.pdfIn PDF document text
    • http://pilomewolax.epizy.com/irs_1040ez_2017_worksheet_line_f.pdfIn PDF document text
    • http://rixuzomobe.epizy.com/como_fazer_assinatura_digital_em.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_off0000df89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF89 5188 bytes
SHA-256: 8841df9dca0d3e372bceed4201bb83729d96ba3478d347142eada8fb0e5e4fce
font_01_sfnt_off0000f10a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10A 10436 bytes
SHA-256: b61982986acd2cac08ab027a81b9821ad10fe16e231fc3ba57f2bcab48c6c09a