Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d591572f261d66…

MALICIOUS

PDF

71.3 KB Created: 2021-02-25 22:11:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4bc31bc7c1f8837f9017a30cafac926a SHA-1: 8e0b336c5966067ca3fe8c7427b6bb0dc0389d1e SHA-256: c3d591572f261d66c29e63be43016515a2d2c6ec1028ed308049b550af04f4f4
126 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
  • 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://leonvi.ru/wb?keyword=what%20are%20the%20different%20types%20of%20civil%20war%20battles PDF link annotation
    • https://cdn.sqhk.co/leporolino/Egi5hdH/divaricate_definition_biology.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/JgiEgfr/88510861797.pdfIn PDF document text
    • http://sayfelengs.space/avaya_partner_18d_manualg86fh.pdfIn PDF document text
    • https://nazorilorapumug.weebly.com/uploads/1/3/0/7/130776423/paxoje-lagikotutax-tajipodotewuk.pdfIn PDF document text
    • http://ig-about.net/gas_chromatography_lab_report_abstractkgnpz.pdfIn PDF document text
    • https://gevobudijopu.weebly.com/uploads/1/3/4/8/134880408/vowidibavosudurox.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/bgc2GFZ/gasiwuzoze.pdfIn PDF document text
    • http://shoop-fo.ru/dumb_ways_jr_loopy_s_train_set_apkaji4g.pdfIn PDF document text
    • http://picsonair.com/kinoni_barcode_reader_pro_apkcyspf.pdfIn PDF document text
    • http://zabemaladameg.medianewsonline.com/longest_research_paper_ever_written.pdfIn PDF document text
    • https://cdn.sqhk.co/gagobuniponi/ihGk9gi/rizusanuduporedifoj.pdfIn PDF document text
    • https://memetunariva.weebly.com/uploads/1/3/1/4/131454345/rotefi-dizizudopam.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/sifawekujiki/how_to_start_lexus_rx_350_with_key_fob.pdfIn PDF document text
    • http://sukowinom.rf.gd/christmas_koila_audio_songs.pdfIn PDF document text
    • http://wirijabi.rf.gd/mijn_belastingdienst_aangifte_2017_en.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_off0000d99f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99F 5648 bytes
SHA-256: e719399e9db70362704ca68d78b3021a52e29ced0a2551e0dc15ff7afb84f587
font_01_sfnt_off0000ecf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF1 10240 bytes
SHA-256: c622329dad03b711c2fe7c1494dcb5a1b8768edb9ef75ff6cea1a441e2f6694e