Malicious PDF — malware analysis report

Static analysis result for SHA-256 69580d95facc1b92…

MALICIOUS

PDF

82.1 KB Created: 2021-03-10 16:51:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 80f922fbcbfbd9d60044f5feb5aafddf SHA-1: b601883835d4d3fdf0fa37229dbb0ca086d712ba SHA-256: 69580d95facc1b92d49e5956adb36248af45ee30cebde09dc5e5af60400ea214
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are structured to mimic search results, suggesting a phishing or SEO poisoning attack. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a malicious site for further compromise. No scripts were extracted, but the overall structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/wix?keyword=fit+and+well+13th+edition+pdf+free PDF link annotation
    • http://xiwesesakuvel.medianewsonline.com/principles_of_geotechnical_engineering_7th_edition_solution_manual_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465386/normal_60246ee77d94b.pdfIn PDF document text
    • http://nanebaxexob.getenjoyment.net/26860806709.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451352/normal_5fd7d4fe18206.pdfIn PDF document text
    • http://voseboler.iblogger.org/online_autocad_file_converter_to.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410006/normal_5fdbc3ee89581.pdfIn PDF document text
    • http://julivojurukumu.sportsontheweb.net/the_sims_3_generation_serial_key.pdfIn PDF document text
    • http://mizifasurogik.mywebcommunity.org/ketaw.pdfIn PDF document text
    • http://tonedomopoja.scienceontheweb.net/97989692545.pdfIn PDF document text
    • http://mixezitubut.mygamesonline.org/66104366742.pdfIn PDF document text
    • http://dakisemakegag.sportsontheweb.net/xugonidut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501214/normal_5fe5e38503631.pdfIn PDF document text
    • http://wugupomovupa.sportsontheweb.net/active_and_passive_voice_worksheets_for_grade_6.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/88b639ce-f8b3-41b6-8a3d-7ffd4d3f5d1c/61993729111.pdfIn PDF document text
    • http://fapudimilo.rf.gd/standard_enthalpy_change_of_reaction_formula.pdfIn PDF document text
    • http://lajirobodogew.epizy.com/singular_and_plural_verbs_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dd555a3-f822-402a-bd52-8b80ff1f6888/47250463008.pdfIn PDF document text
    • http://zonafikepejese.onlinewebshop.net/horse_dog_costume.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/how_to_change_a_ceiling_fan_downrod.pdfIn PDF document text
    • http://fadudenomo.onlinewebshop.net/what_is_the_meaning_of_a_narrative_paragraph.pdfIn PDF document text
    • http://suduxegowur.onlinewebshop.net/dobamexewibuvil.pdfIn PDF document text
    • http://totuxivez.onlinewebshop.net/how_to_fix_a_stuck_badger_garbage_disposal.pdfIn PDF document text
    • http://tavopaku.rf.gd/html_form_button_onclick_javascript.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_off0000febd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEBD 5216 bytes
SHA-256: 4ea86bf95dd112e9748a1408081fe3a9d2988bfc23e6313b75fbcbfd8b1a9cd5
font_01_sfnt_off00011091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11091 12732 bytes
SHA-256: 8fc86a6029688eaf1b7b1bd9a8d8fbb7a4b85c37a2f8e1fe2a12075e9bc37f24

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