Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0fde2e1762fb01d…

MALICIOUS

PDF

97.1 KB Created: 2021-03-06 14:37:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 58a530915888e84c41aa50b2a1df8edb SHA-1: 0deb200b4743ca7a20d06b44a8e9ef4761de2586 SHA-256: d0fde2e1762fb01d73fd4c7950908ce0e407c99223093df6df33fb52c3d167aa
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content, likely a phishing page or a download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://lozipotod.ru/strik?utm_term=dunkin+donuts+new+power+breakfast+sandwich+calories PDF link annotation
    • http://lozajakar.iblogger.org/sefajeki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414860/normal_6002984752137.pdfIn PDF document text
    • http://goodnaturak.space/fusakilyq3k.pdfIn PDF document text
    • http://radasekot.iblogger.org/best_dog_groomers_in_my_area.pdfIn PDF document text
    • http://felagem.getenjoyment.net/how_to_clean_stihl_blower_air_filter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478127/normal_601a2fda717fb.pdfIn PDF document text
    • https://vijopafixav.weebly.com/uploads/1/3/1/6/131636601/4ce18c.pdfIn PDF document text
    • http://kefets.xyz/nikigaxodebejoman6k7o1.pdfIn PDF document text
    • http://lozhobelir.space/tivamulekoruseniluvurhk17f.pdfIn PDF document text
    • http://eurozone.pro/who_can_solve_a_rubiks_cube_the_fastestqny8i.pdfIn PDF document text
    • http://dopogabijup.mywebcommunity.org/maridubilirazujigejovaxow.pdfIn PDF document text
    • http://ferategaj.scienceontheweb.net/64936719972.pdfIn PDF document text
    • http://powerpoint4you.ru/7763027589921vfi.pdfIn PDF document text
    • http://liwurivosopap.medianewsonline.com/77196063273.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/virokeputejenokazif.pdfIn PDF document text
    • https://wejibuxod.weebly.com/uploads/1/3/0/7/130740202/7413698.pdfIn PDF document text
    • https://lukafove.weebly.com/uploads/1/3/4/6/134655473/dukudobovodukuk-kizira.pdfIn PDF document text
    • https://siwuxamafovad.weebly.com/uploads/1/3/4/4/134489720/79827.pdfIn PDF document text
    • https://jilarikogezinuv.weebly.com/uploads/1/3/0/9/130969280/6977481.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lariroze.rf.gd/ketafexetuxevotigejugazin.pdfIn PDF document text
    • http://zidabisix.epizy.com/8126476726.pdfIn PDF document text
    • http://roruxarese.rf.gd/timeline_infographic_template_powerpoint.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/rifixazonorajexer.pdfIn PDF document text
    • http://danebusuji.onlinewebshop.net/16042988741.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_off00013b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B9E 5540 bytes
SHA-256: b77b9ceeb89996fa3965c98fdb6f457a6fd0dc0640f6003ccbe8616c924b361e
font_01_sfnt_off00014e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E86 12148 bytes
SHA-256: 59a3458ff17837be06add53b51e85532a2b041419f16d47e6f091987f2918d69