Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c1a606577af43f…

MALICIOUS

PDF

75.5 KB Created: 2021-02-23 04:41:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 123e42666ab5d93376bb269f169c32a2 SHA-1: 58ea403bfbc83f62b351e2ca347800650cbfc432 SHA-256: 25c1a606577af43f55761d208ce1d412a04f2a8a1b091e712c868491ef90d5c7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bologen.ru/wix?keyword=minecraft+pe+17.0+apk+mediaf%25C4%25B1re PDF link annotation
    • https://dudobafileziv.weebly.com/uploads/1/3/5/3/135331993/1254091.pdfIn PDF document text
    • http://auth02mobility.com/plastic_carry_bag_design_templatesg660.pdfIn PDF document text
    • https://fubalaxusagipun.weebly.com/uploads/1/3/4/1/134108832/mapesamutenut.pdfIn PDF document text
    • https://joxunirefebemi.weebly.com/uploads/1/3/4/3/134319414/4728098.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492281/normal_5fdfc01ae3e38.pdfIn PDF document text
    • https://defavelusanopef.weebly.com/uploads/1/3/5/3/135345674/3843207.pdfIn PDF document text
    • https://kominalekawer.weebly.com/uploads/1/3/1/6/131636772/867293fb40d.pdfIn PDF document text
    • https://rijagadufe.weebly.com/uploads/1/3/1/6/131606992/5d083337dcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450630/normal_5fd61c63b6129.pdfIn PDF document text
    • https://mokapojigum.weebly.com/uploads/1/3/4/6/134690111/fonanuv_nikored_pujekevi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444649/normal_600cc29dc7d48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375522/normal_6033b6a8f0f4e.pdfIn PDF document text
    • https://cdn.sqhk.co/luwiwaduna/VTvc0Px/general_knowledge_quiz_2020_funny.pdfIn PDF document text
    • https://jafiwivejo.weebly.com/uploads/1/3/5/3/135305612/2154708.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_5fe81e4169b82.pdfIn PDF document text
    • https://cdn.sqhk.co/dofewijoras/gghiiar/pixel_football_player.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nizalag.rf.gd/10557926887.pdfIn PDF document text
    • http://bizepusozuj.epizy.com/detailed_engineering_design_report.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_off0000e93b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93B 5496 bytes
SHA-256: 911094e133b3a890fa901c2e609310335f4ccf8892ee47be1f2d50876ca911aa
font_01_sfnt_off0000fc02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC02 10264 bytes
SHA-256: 7cd298ca8ee88d148becbbbd8f3dba850a717126b5d3fdc28d1531390de5abf9