Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e8acf24b6cda658…

MALICIOUS

PDF

71.6 KB Created: 2021-02-13 10:45:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8163337849a406ac26f6a02016f12880 SHA-1: 31467d56515a5f4c025ba89b46ca74a3e8a845e9 SHA-256: 1e8acf24b6cda658f03a6d37ea9d68bc467b50b9b421a7dad3cd9ec617ffce8c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://druttle.ru/wb?keyword=ieee%20transactions%20on%20magnetics%20latex%20template PDF link annotation
    • http://gasokab.iblogger.org/enhanced_due_diligence_checklist_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487662/normal_602150e30023f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427268/normal_6017409b5a35c.pdfIn PDF document text
    • http://mokexuvukidifek.iblogger.org/41878947553.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451757/normal_6025f66497d1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494165/normal_5fdc79bc0b699.pdfIn PDF document text
    • http://nature-ital.space/406774325602hls6.pdfIn PDF document text
    • https://vasetovomakoti.weebly.com/uploads/1/3/2/7/132741031/rezitixonufor_muferited_pomejiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pububebojivoru.epizy.com/antivirus_smadav_terbaru_2018_free.pdfIn PDF document text
    • http://zosajirigo.rf.gd/britney_spears_young_performance.pdfIn PDF document text
    • http://xuwunokebisul.rf.gd/endocarditis_reumatica.pdfIn PDF document text
    • http://winupenelipumo.epizy.com/circuit_court_case_information_arlington_va.pdfIn PDF document text
    • http://jewezoku.epizy.com/rulupusuxivumarijut.pdfIn PDF document text
    • http://xivefasojag.epizy.com/char_broil_pellet_smoker_manual.pdfIn PDF document text
    • http://viladanus.epizy.com/wrong_turn_full_movie_480p_free.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_off0000d7ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EE 5256 bytes
SHA-256: 35e4454fe081e5f32bc7fae7737a4663aa88b64032087b6d598cf0740d21dc16
font_01_sfnt_off0000e9bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BF 11668 bytes
SHA-256: bf7ea088de7a6fa2ddb0be6cebb967f381d61b9d25b47c3c97f12566fc4475a9