Malicious PDF — malware analysis report

Static analysis result for SHA-256 646473fbedd05cc1…

MALICIOUS

PDF

109.3 KB Created: 2021-04-25 02:59:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 7eb9aea3281fd6d9e01551973784e8c1 SHA-1: 427309abf13221dafd5e7b23c813611bae7ead12 SHA-256: 646473fbedd05cc1eaeb67700e25fcc00b32276c8043868888003db7418693c0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including ML and ClamAV, as malicious. It contains numerous external URIs and embedded links, indicating a strong likelihood of phishing or malware distribution. The PDF structure and embedded content suggest it's part of a link farm designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://mezovuduw.ru/strik?utm_term=5e+monstrous+player+races PDF link annotation
    • http://vorecan.fun/ranatimakzabnr.pdfIn PDF document text
    • http://vozivovog.scienceontheweb.net/18552601324.pdfIn PDF document text
    • http://littlenat.space/92823948378zvdfq.pdfIn PDF document text
    • http://bimonetejatoleb.mygamesonline.org/anthony_giddens_sociology_8th_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/viforoge/dDL5jlM/bupaxuvovepiza.pdfIn PDF document text
    • http://nusezuretoti.scienceontheweb.net/91724737284.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/c1aggrx/alternance_informatique_lyon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492892/normal_60029b8c3aeb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412889/normal_6042f29bab2ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476952/normal_6008d500033be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_60663f49e5add.pdfIn PDF document text
    • http://bandalet.club/sofafisafupaseb2s4v.pdfIn PDF document text
    • http://fitness-ital.fun/30533688499qm4mp.pdfIn PDF document text
    • http://giocodigital.website/elenco_500_in_one_electronic_project_lab_manual5nshp.pdfIn PDF document text
    • http://matteset-spon.space/lutaloweperetupibrwaoj.pdfIn PDF document text
    • http://smotrikino.fun/bronze_age_mindset_summaryv68zf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464870/normal_600f4c7d3bd82.pdfIn PDF document text
    • http://fabermanufacture.ru/advena_apk_freeerfgb.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/hjridGJ/phoenix_suns_news_trade.pdfIn PDF document text
    • https://cdn.sqhk.co/bodujemep/k37NR99/pukinogakoregafasuzarowu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://baxewape.myartsonline.com/98957659772.pdfIn PDF document text
    • http://lekeviwa.onlinewebshop.net/sifilikabikimakifapawuj.pdfIn PDF document text
    • http://milibelibagusez.epizy.com/40211436863.pdfIn PDF document text
    • http://zitipibozag.rf.gd/40497511758.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_off0001705f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1705F 5212 bytes
SHA-256: eb1c6189de71949178909a6c4bf0ea4f58f93e4ebf7319a54f17b7eecf875771
font_01_sfnt_off00018209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18209 10996 bytes
SHA-256: f6bed432216a733c67c8d4067719d3db55af057a629b2d74987d1fbb9ed43ca8

Open this report in the interactive analyzer, or submit your own file for analysis.