Malicious PDF — malware analysis report

Static analysis result for SHA-256 cec784fc122b5f31…

MALICIOUS

PDF

74.8 KB Created: 2021-02-05 20:45:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bce697b073c6238cb1b36fe273aa9f4e SHA-1: 2b05c5307e381a4ee97d44867b3be27c8772eba4 SHA-256: cec784fc122b5f31081d407c7f6ae87f8b1682b784359905b798dfc16f5d0c77
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=complete%20information%20about%20neet%202019 PDF link annotation
    • https://cdn.sqhk.co/fiporalisu/1utychg/homescapes_level_2446.pdfIn PDF document text
    • https://cdn.sqhk.co/gulijolane/GNLjj7J/photo_video_maker_app_online_play.pdfIn PDF document text
    • https://derigibi.weebly.com/uploads/1/3/4/4/134447264/5777196.pdfIn PDF document text
    • https://jiliwadikejupa.weebly.com/uploads/1/3/1/3/131379685/9069637.pdfIn PDF document text
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/zesikisokalenixi.pdfIn PDF document text
    • https://monezoxikaxusoj.weebly.com/uploads/1/3/1/4/131453753/bff292af3c.pdfIn PDF document text
    • https://cdn.sqhk.co/luxixumogez/ihihlij/88986758368.pdfIn PDF document text
    • https://cdn.sqhk.co/febenanedibu/wifQgjr/nizorematimuz.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/vtR2Bji/54907511061.pdfIn PDF document text
    • https://bolubevegu.weebly.com/uploads/1/3/1/4/131454373/dopudigi_duzoxikef_fovemibazu.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/xulepiwa/barbecue_charbon_char_broil_performance_charcoal_3500.pdfIn PDF document text
    • http://bajivuselome.epizy.com/55768145380.pdfIn PDF document text
    • http://sedilar.rf.gd/beginner_english_grammar_exercises.pdfIn PDF document text
    • http://bidadefaj.epizy.com/powerpoint_lesson_3_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/manual_roller_bending_machine_project.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_off0000e5a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A2 5396 bytes
SHA-256: 9af1336fe6db760a0d9d0d557a1ee5186961b1c12f33cbed76f73112d4abf78f
font_01_sfnt_off0000f7dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7DD 11976 bytes
SHA-256: 9f80d2ea4cb58b6e4faeba95ff4c9cb022d2ce7548d0a9e42fa75dfc7fc3d246