Malicious PDF — malware analysis report

Static analysis result for SHA-256 8754eaff2bb20541…

MALICIOUS

PDF

72.8 KB Created: 2021-02-17 09:47:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0b579085efb338c58bf9851d9b3a8806 SHA-1: 6b2e8f7e85abbcac700593a51befcf7affd4bc1e SHA-256: 8754eaff2bb205415188d102a27a7ab0ddf6b0846590790cfa7d7e6a6085f9a4
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://bologen.ru/wix?keyword=ancient+greece+and+rome+study+guide+answers PDF link annotation
    • http://organic100.fun/31567226984tk1u0.pdfIn PDF document text
    • http://winnerslm.space/67245170761g72h4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457570/normal_5fe1ba3bda4ec.pdfIn PDF document text
    • http://xtreme-sport.ru/the_practicing_mind_quotesjq4j8.pdfIn PDF document text
    • http://labiosdewonda.com/zadaweboktiylj.pdfIn PDF document text
    • https://xuduwenonotowud.weebly.com/uploads/1/3/1/3/131379268/6889148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403679/normal_6024159a203d3.pdfIn PDF document text
    • http://kkkirrreeee.space/vixagebp8zle.pdfIn PDF document text
    • http://yoga-fitness.space/34837581072lqv14.pdfIn PDF document text
    • https://topirameji.weebly.com/uploads/1/3/2/6/132682330/5200895.pdfIn PDF document text
    • https://tewifevorifoja.weebly.com/uploads/1/3/4/3/134387655/475fb57.pdfIn PDF document text
    • http://sewonmedix.ru/how_to_clean_briggs_and_stratton_carburetor_without_removing_it1gzjv.pdfIn PDF document text
    • http://lnstagramcopyrigtservice.com/wodetejanufurnvq6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464055/normal_5feec9fde5fb6.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/veledabejufi/ravamuzil.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/konelulasok.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/bed_frame_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/aluminium_corrugated_sheet_supplier_in_uae.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/form_pan_card_application.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/bukepefimonuvonamifale.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_off0000e074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE074 5408 bytes
SHA-256: 7e1d431c49a625d923b7cae2d940c0c51b50415b1e1e774d2bc9eac85979bcdc
font_01_sfnt_off0000f2d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D9 10148 bytes
SHA-256: 992aeda8c1d9d1e56ffad468078a7b61daeb071cff69fde6982104249b342be8