Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d83b64837cfb59…

MALICIOUS

PDF

70.5 KB Created: 2021-03-05 05:11:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: f9b7e23469b02deb3f049cfc62041865 SHA-1: efab5244d57a8edd1476862ab61c6ccea033433e SHA-256: d3d83b64837cfb59c74b900aae4717a7f9d2724cf842ed74632891c9dd20fe96
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/award?keyword=falling+upwards+productions In PDF document text
    • http://rinusiwujegabu.medianewsonline.com/wiraluverowavimip.pdfIn PDF document text
    • https://xixemoxutosiseg.weebly.com/uploads/1/3/4/4/134473276/a8be5118.pdfIn PDF document text
    • https://virenejamavik.weebly.com/uploads/1/3/4/1/134131854/7791859.pdfIn PDF document text
    • https://vataripisak.weebly.com/uploads/1/3/4/6/134600115/pefegu.pdfIn PDF document text
    • http://rijexofugovu.medianewsonline.com/casio_protrek_watch_set_time.pdfIn PDF document text
    • http://ersoil.fun/bongo_movie_mpya_mp4aupvn.pdfIn PDF document text
    • http://zdorovie-vashe-vse.xyz/wingman_formula_force_gpa0mrf.pdfIn PDF document text
    • http://dujaliz.iblogger.org/manuale_bticino_l4448.pdfIn PDF document text
    • http://satogolijosefas.iblogger.org/kutadaragiwer.pdfIn PDF document text
    • https://balebapu.weebly.com/uploads/1/3/5/3/135322653/3325eefd6e79d.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/vezasen.pdfIn PDF document text
    • http://mklhhhh.space/epson_advanced_printer_driver_4_windows_10v5z0l.pdfIn PDF document text
    • https://tivizaxif.weebly.com/uploads/1/3/1/3/131381605/rurevujuf_vafavamosatujov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/zilumokixivoke.pdfIn PDF document text
    • http://wikukodukoja.onlinewebshop.net/do_blue_dye_tests_always_have_a_faint_line.pdfIn PDF document text
    • http://zaponabugati.epizy.com/engineering_drawing_n2_study_guide.pdfIn PDF document text
    • http://nawexox.epizy.com/wuduka.pdfIn PDF document text
    • http://sufojokene.rf.gd/pelipafu.pdfIn PDF document text
    • http://jemileti.atwebpages.com/old_skool_vans_black_white_gum.pdfIn PDF document text
    • http://jajogagek.atwebpages.com/how_to_calculate_number_of_working_days_in_excel.pdfIn PDF document text
    • http://legopabez.rf.gd/garcia_marquez_el_amor_en_los_tiempos_del_colera_frases.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_off0000d571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD571 5288 bytes
SHA-256: a890597b383f3cbaf98194fded627e14ba54cf5ed0076b09f4422e2cf2280929
font_01_sfnt_off0000e793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE793 10352 bytes
SHA-256: 021006c9ab5190ba27f4fc1e30db100af2c00b1a79476885be25f1fc8ca282e3