Malicious PDF — malware analysis report

Static analysis result for SHA-256 091a71bc3b987d33…

MALICIOUS

PDF

69.0 KB Created: 2021-02-27 04:54:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a764b285defffba77050dcbef1e377a0 SHA-1: 0b6c6dc8326fcff9b874efdc023d3f0234dafb8a SHA-256: 091a71bc3b987d33c5ef97090fc28a89992dcac48e17ac17b6cdab8b5511f97a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/wix?keyword=our+lady+of+lourdes+daytona+facebook PDF link annotation
    • http://zekojotewakugag.mypressonline.com/11029546057.pdfIn PDF document text
    • https://pixokunotozonux.weebly.com/uploads/1/3/4/0/134017876/dakofebunekazi.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/gejfFjj/the_zombies_time_of_the_season_lyrics_meaning.pdfIn PDF document text
    • http://pozijuza.scienceontheweb.net/48300005953.pdfIn PDF document text
    • https://cdn.sqhk.co/mewobonovagi/jcfAQji/94010450613.pdfIn PDF document text
    • https://tiwebusimevadeb.weebly.com/uploads/1/3/5/3/135346158/789556.pdfIn PDF document text
    • http://xejebowipuzusim.iblogger.org/how_to_use_rca_projector_with_iphone.pdfIn PDF document text
    • https://ligiponofejejo.weebly.com/uploads/1/3/4/3/134346234/lameguvozu.pdfIn PDF document text
    • https://gimoxawoja.weebly.com/uploads/1/3/1/3/131380550/f79b3ed05e00d.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxabofapuw/hihj46u/ferubuma.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/aUKBl5g/kibonabuwulalipuviraw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/dragon_nest_mobile_guide_academic.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/20611427786.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/venice_news_report.pdfIn PDF document text
    • http://safadixuzet.rf.gd/76727459339.pdfIn PDF document text
    • http://napilidowolaro.rf.gd/induction_program_for_new_employees_report.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/xoladulibunurag.pdfIn PDF document text
    • http://lafojagifod.epizy.com/26411506663.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/viseselakofuzoj.pdfIn PDF document text
    • http://xalobazinapirep.epizy.com/that_evening_sun_go_down_literary_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/livro_a_dieta_da_cabala.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E9 5184 bytes
SHA-256: aa9d50cf5e3e8715d1cb443a7b4e0e1c74a7a39fcc5cf0c7db16127f65567499
font_01_sfnt_off0000d6a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A6 9808 bytes
SHA-256: 0f8d187168425e5a537c632018b826ed3e93b8eadd99c5264c2a14f890d9b6b8
font_02_sfnt_off0000f860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF860 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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