Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8340aeab08ad398…

MALICIOUS

PDF

72.8 KB Created: 2021-01-18 23:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 922bcb12cf0ab8783e98749c108c4dc0 SHA-1: 61d1808c32d93a212a54a6c633a06038f76b482d SHA-256: e8340aeab08ad3981c9c3d1902e049f3c7e7b84ba7d1de2fffd778c7a681d557
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/wb?keyword=toll%20idle%20%D0%B2%D0%B7%D0%BB%D0%BE%D0%BC PDF link annotation
    • https://cdn.sqhk.co/moxulofilose/eSggic5/nemimixowokunuko.pdfIn PDF document text
    • https://purusoze.weebly.com/uploads/1/3/4/4/134495244/a7dbd6c99.pdfIn PDF document text
    • https://nadosivilir.weebly.com/uploads/1/3/4/3/134316305/3b77e.pdfIn PDF document text
    • https://wanezevidika.weebly.com/uploads/1/3/4/5/134588498/laseji.pdfIn PDF document text
    • https://rajizoru.weebly.com/uploads/1/3/1/8/131856770/kobixiz.pdfIn PDF document text
    • https://fategebedabeno.weebly.com/uploads/1/3/4/7/134718848/3c840056.pdfIn PDF document text
    • https://cdn.sqhk.co/mapigusene/b7ia8jd/voice_jump_game_download.pdfIn PDF document text
    • http://semazolowogafoj.22web.org/cerebro_reptiliano_limbico_y_cortex.pdfIn PDF document text
    • https://misopiwulasi.weebly.com/uploads/1/3/1/8/131856666/pirozofejo.pdfIn PDF document text
    • https://vowobonu.weebly.com/uploads/1/3/4/8/134853209/nuwufu-lonubujusodu-rutus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/bcom_hons_books_free.pdfIn PDF document text
    • http://kejufunekopal.epizy.com/chord_keyboard_apps_android.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/13825627680.pdfIn PDF document text
    • http://zumebixakefeta.epizy.com/nclex_infection_control_study_guide.pdfIn PDF document text
    • http://jibipadesubamom.epizy.com/80142487873.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_off0000d592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD592 4880 bytes
SHA-256: debafc1123da8a7dcc143b13d542c7b4974d5b204bb0af7e4f22af35715d7664
font_01_sfnt_off0000e604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE604 15152 bytes
SHA-256: 3f6c39ebd8df163a88eebd9cd9eaaf25ce4c30d905ce8a226e82630196ab6e61