Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5b11a79d8a12bf1…

MALICIOUS

PDF

73.1 KB Created: 2021-03-03 11:29:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 34247628221b4659b5d70f4bd7852035 SHA-1: f0cbb5baafe7295ad89de6997ccba26f9c5730b1 SHA-256: b5b11a79d8a12bf15c47d79217f50cf2f89c96dc3c613b660175dfbbfb8657c0
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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
  • 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://ponafet.ru/award?keyword=safewatch+3000+change+master+code PDF link annotation
    • http://vibolofisef.mywebcommunity.org/pazidogezerovililir.pdfIn PDF document text
    • http://retapadu.medianewsonline.com/how_to_start_a_home_baking_business_in_texas.pdfIn PDF document text
    • http://fukazab.mywebcommunity.org/83287981838.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/adventures_of_huckleberry_finn_facts.pdfIn PDF document text
    • http://finomimetafix.sportsontheweb.net/web_shell_html_css_js_ide.pdfIn PDF document text
    • http://manamuposa.getenjoyment.net/64897784142.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/56942964369.pdfIn PDF document text
    • http://vumogegotawugub.mypressonline.com/muzodunese.pdfIn PDF document text
    • http://sibogufurab.medianewsonline.com/monash_fodmaps_list.pdfIn PDF document text
    • http://palosal.22web.org/us_dietary_guidelines_saturated_fat.pdfIn PDF document text
    • http://sujiwajarow.22web.org/53507121412.pdfIn PDF document text
    • https://cdn.sqhk.co/fogibadeku/hiEhhGd/52980256997.pdfIn PDF document text
    • http://kozidozilujivox.getenjoyment.net/67160941258.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412757/normal_600db9bc60f0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381988/normal_600db74364c27.pdfIn PDF document text
    • http://pobesegu.scienceontheweb.net/ap_art_concentration_ideas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://donijexufenu.onlinewebshop.net/craftsman_18_chainsaw_bar_and_chain.pdfIn PDF document text
    • http://gakuxalodakedaj.epizy.com/how_to_load_plugins_in_fl_studio_20.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_off0000e063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE063 5904 bytes
SHA-256: 2e04b6258e6836cb97faffc10aee6abb2f3ab3218722a48eba37b83658f84252
font_01_sfnt_off0000f466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF466 10196 bytes
SHA-256: 2015c5918520573f94561b9e63ff29a85653baf38ccf5f5bca4ba69488362787