Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a6c9e3326b4b74…

MALICIOUS

PDF

62.9 KB Created: 2021-02-20 18:10:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 11397755a4f69b1eae92706132fe6f22 SHA-1: c69ffadb359c33b686bedd9d00649c2cb3cec20e SHA-256: a6a6c9e3326b4b74df318c70b0f2ce107c7aa9ac8d01761c36b516d04f966cd8
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/aws?utm_term=how+to+load+staples+one+touch+compact+stapler PDF link annotation
    • https://niwosegebopusa.weebly.com/uploads/1/3/4/5/134583118/dijekodiwimoru.pdfIn PDF document text
    • https://cdn.sqhk.co/wevafofed/V5xhirM/fazileba.pdfIn PDF document text
    • https://cdn.sqhk.co/vinasujitupe/68midhe/46118554674.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/hagerdI/hillside_drive_game.pdfIn PDF document text
    • https://fewupebotugap.weebly.com/uploads/1/3/0/7/130739906/5780ad9f344470.pdfIn PDF document text
    • http://fruitslope.online/kikis_delivery_service_book_english2dduk.pdfIn PDF document text
    • https://vigoxanumevu.weebly.com/uploads/1/3/4/4/134466257/ziwivob.pdfIn PDF document text
    • https://lurukise.weebly.com/uploads/1/3/4/4/134454795/fabap_vivisod_parunafawuw_desapag.pdfIn PDF document text
    • https://geridaradekod.weebly.com/uploads/1/3/1/4/131437552/zefadizuj.pdfIn PDF document text
    • https://puxezemugip.weebly.com/uploads/1/3/4/3/134311794/7044399.pdfIn PDF document text
    • https://birivisixakaxe.weebly.com/uploads/1/3/4/6/134608058/romozexitazo.pdfIn PDF document text
    • https://janazasifopuno.weebly.com/uploads/1/3/4/4/134437996/38bf831cc3b.pdfIn PDF document text
    • https://dugitesabisaxo.weebly.com/uploads/1/3/4/3/134392589/tepijerek_puladabiz_rogatositidez_rivukupufi.pdfIn PDF document text
    • https://funogumoduwe.weebly.com/uploads/1/3/4/3/134309977/fanuvoto.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/jojitagifuva/calendar_template_december_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/livro_onde_est_wally.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/bellona_offset_form_yatak_160x200.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/single_bed_size_guide.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_off0000baa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAA3 5368 bytes
SHA-256: fec9edb4d2fc7cfbd70fefbb7dff915245ba83f71be323be87e3c114ddb06e71
font_01_sfnt_off0000ccc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC6 9964 bytes
SHA-256: 653b9249dfe4bdb54fcab395a2efe44bc5eab34edb837a50b0d8597a6d562cef

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