Malicious PDF — malware analysis report

Static analysis result for SHA-256 b184a42ee1806dca…

MALICIOUS

PDF

75.9 KB Created: 2021-04-01 15:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d4504625be897fd98976b66a1fa63341 SHA-1: 4bdb7525481ba56d4d6068f6b9544ebaed0d0533 SHA-256: b184a42ee1806dca474f923edcda3c8a399449dca8aaecf128aaa99e26d55cfe
192 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to known malicious redirectors and disposable hosting, indicating a phishing or malware distribution attempt. The presence of a 'download button' heuristic further supports this, suggesting the document is designed to trick users into downloading a payload. ClamAV detection and ML classification confirm the malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?utm_term=audit+corrective+action+plan+template In PDF document text
    • https://cdn.sqhk.co/dewufidabo/egiifja/gta_san_andreas_extended_gang_war_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/gisusisabez/h0jdjfC/musawobezufu.pdfIn PDF document text
    • http://xtrading.buzz/lefugamuregevimifaylt86.pdfIn PDF document text
    • http://pokemama.iblogger.org/46830450452.pdfIn PDF document text
    • https://cdn.sqhk.co/beledufe/Lridsnr/13578704474.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/hdha0Uc/followers_and_likes_for_tiktok_free_2020.pdfIn PDF document text
    • http://itash.space/how_to_set_up_dmx_512_controllerxg2fx.pdfIn PDF document text
    • http://xxlmature.site/ruckus_service_manualt59jr.pdfIn PDF document text
    • https://cdn.sqhk.co/kabevapixox/IAJibje/teputalubemowajabedina.pdfIn PDF document text
    • http://podarokinsta24.online/how_to_find_the_long_run_average_total_cost_curvefn49u.pdfIn PDF document text
    • https://cdn.sqhk.co/vekotevudoze/6hegigd/10228751598.pdfIn PDF document text
    • https://cdn.sqhk.co/mixaluwekitu/HOnpyjf/balance_3d_game_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizilo/3jfJgfO/vivuduxevexodagazaze.pdfIn PDF document text
    • https://cdn.sqhk.co/pegipoveridi/snBhcwS/josulefibimasumexijipi.pdfIn PDF document text
    • http://fishing-rods2.club/tres_veces_tu_pelicula_completa_repelis_2019clmd5.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/djbuggC/covid_alert_nj_ny.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/r7jg9jf/96535006915.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/K2sZjcU/blast_beat_movie_kali_uchis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/701b1c77-c0c7-4c79-90fc-9f4de5a82841/the_ultimate_guide_to_tarot_spreads.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afbe2f1e-1c7d-44d9-83d8-d93cd1875b8e/51886166928.pdfIn PDF document text
    • http://desorebo.epizy.com/pajugupikolovifawigebi.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_off0000ebd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD8 5092 bytes
SHA-256: 39adaa634cc0063e1fe8297c539f3f6c5f9d74c93574100645939e9e79a44db0
font_01_sfnt_off0000fd1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1B 10328 bytes
SHA-256: 01627f6a48f64c49168b9228cebb31526cf7b79c977f98f70e33a5deae91a22d

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