Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ec505912a72acb…

MALICIOUS

PDF

72.1 KB Created: 2021-03-03 03:44:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e28e7c1e39101fcdaa14ed4a18af0221 SHA-1: 1a8237b14a759c7e7676acf4e34cecb7f26d7f5c SHA-256: 95ec505912a72acb544dab2d5e1d0d555d3bfb855ff70664a6b628b74ee59107
196 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.
  • 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://druttle.ru/award?keyword=how+to+set+time+and+date+on+esi+phone PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481671/normal_6039eb9e003aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460680/normal_5fe0ce1dd95f5.pdfIn PDF document text
    • http://tufejife.22web.org/african_history_a_very_short_introduction.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389823/normal_5fe357c0d9c99.pdfIn PDF document text
    • https://zokijirimabijim.weebly.com/uploads/1/3/5/9/135964806/fimalas.pdfIn PDF document text
    • https://munuliwakubife.weebly.com/uploads/1/3/1/6/131637312/331992.pdfIn PDF document text
    • https://kirimobo.weebly.com/uploads/1/3/1/0/131069812/2187654.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370764/normal_601e1c2556f43.pdfIn PDF document text
    • http://pimamunoper.iblogger.org/zozenedosezaxijobo.pdfIn PDF document text
    • https://nefotinabe.weebly.com/uploads/1/3/5/3/135314884/28b102.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393904/normal_5ff05c0a6be86.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/zunaporam/chocolate_girl_song_mr_jatt.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/90374801564.pdfIn PDF document text
    • http://notavos.rf.gd/how_to_write_a_narrative_essay_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/27144376854.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/audi_a3_tfsi_2015_manual.pdfIn PDF document text
    • http://safutid.epizy.com/cheryl_s_birthday_problem_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/data_sheet_ultrasonic_flow_meter.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/lesefagadixez.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/gufedefigekexakonajif.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_off0000cfdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDB 4912 bytes
SHA-256: fe9f02d2c4e9b60e4cbcc38a561e6a3501f2bd2f3e41eb2bdfdaf1e7655d8edd
font_01_sfnt_off0000e068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE068 11052 bytes
SHA-256: 947eef15d0298022fe1b37278d8b7616677dca8591d569ad2c6baae4e3e48431
font_02_sfnt_off00010509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10509 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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