Malicious PDF — malware analysis report

Static analysis result for SHA-256 5431211e9293aec8…

MALICIOUS

PDF

66.8 KB Created: 2021-02-11 22:17:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2ecd44008f0a92e3b77ff191d8e36e20 SHA-1: b10084bd3524be21791064a8f5cab3a156c703c4 SHA-256: 5431211e9293aec8610c194fc5c965c3888b42eded8973e45b7963469e903a1b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://yafferge.ru/wix?keyword=trials+of+apollo+the+hidden+oracle+pdf+google+docs In PDF document text
    • https://static.s123-cdn-static.com/uploads/4409256/normal_5fff3a75705b9.pdfIn PDF document text
    • http://fezibinuzot.iblogger.org/kanonuximumudopemulo.pdfIn PDF document text
    • http://liketime.fun/dot_corrective_action_plan_templateeo4t6.pdfIn PDF document text
    • http://bighome.space/113146669188wk7e.pdfIn PDF document text
    • https://cdn.sqhk.co/gejixoneku/RiioVif/48975235104.pdfIn PDF document text
    • http://regvoolkim.website/maplestory_2_assassin_macro_guidez5vz9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408851/normal_5fe27ef1ddf71.pdfIn PDF document text
    • https://cdn.sqhk.co/fizuborugas/ZibifGU/light_up_reindeer_outdoor_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/farosexuto/FY7Xgje/75452486611.pdfIn PDF document text
    • http://ing-cliente.com/hawa_hawa_mp3_song_download_mr_jattiv9zb.pdfIn PDF document text
    • http://helper-badges.com/site_de_piratage_msp_mot_de_passendsn2.pdfIn PDF document text
    • http://vovpomnim.ru/matricom_g-_box_q_firmwarefhnxk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fukefuxatolu.epizy.com/siketimevopalit.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC9A 5156 bytes
SHA-256: c956b4e84c8531b9e11a7bd4f53675694eceba26072489ec57851b951035eb35
font_01_sfnt_off0000ce11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE11 9892 bytes
SHA-256: 129406a6c88aba925a5852d6e3df754bdf609625cfd1c395fec28b328dd041fd
font_02_sfnt_off0000efdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378