Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61b8edc08d77355…

MALICIOUS

PDF

74.3 KB Created: 2022-04-03 02:44:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 64e532b89c47e7091e513d2f7ac3be6f SHA-1: 2f0825ad59279df50d7cff9a7b4e23df8c1c0008 SHA-256: b61b8edc08d773550157a858e997ad6ea56e16001eaabafcc98b7eb44bac4ef5
181 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/0ccb0ea485802481d7e90f70dd23fea4/fupuwewaz.pdf In PDF document text
    • http://harmony-lazienka.pl/Upload/file/nifizirukijidivorawivelen.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/kkkg3vdtsjf2u780ts5u04oj81/66746296534.pdfIn PDF document text
    • http://instalacje-elektryczne.net/ckfinder/userfiles/files/titizefuzuwopidimixalejo.pdfIn PDF document text
    • https://doanandieuduong295doson.vn/namthuan/images/news/files/mexovoredit.pdfIn PDF document text
    • https://nododekevage.weebly.com/uploads/1/3/4/7/134733794/5b6ef205.pdfIn PDF document text
    • http://beautystyln.jp/uploads_file/files/77794304472.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1623054c80f1da---xusafotirax.pdfIn PDF document text
    • http://jaluzipro.ru/public/userfiles/file/79162272800.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/livumixoxasapat.pdfIn PDF document text
    • http://lindendirect.com/ckfinder/userfiles/files/kawojimo.pdfIn PDF document text
    • https://penuxiledal.weebly.com/uploads/1/4/1/3/141338745/e62a98a0403d8.pdfIn PDF document text
    • https://widepolymers.com/userfiles/file/39433019594.pdfIn PDF document text
    • http://avgustal.ru/kcfinder/upload/files/wowowanugitedaranib.pdfIn PDF document text
    • http://maslatalaia.com/userfiles/file/67569395331.pdfIn PDF document text
    • https://lanna-flyingclub.com/ckfinder/userfiles/files/xukexiner.pdfIn PDF document text
    • https://gokatejasefe.weebly.com/uploads/1/3/4/6/134650338/1113768.pdfIn PDF document text
    • http://eventechsite.com/files/files/29556675201.pdfIn PDF document text
    • https://www.willmarshelter.com/ckfinder/userfiles/files/lojerapede.pdfIn PDF document text
    • http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/72027618730.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16230c419e00bd---99796782795.pdfIn PDF document text
    • http://newpacksy.com/admin/kcfinder/upload/files/rubukux.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1623b54043256c---kanigulexovununeb.pdfIn PDF document text
    • https://wuvekodufunat.weebly.com/uploads/1/3/5/2/135298648/lulalugiza_jiwopezowazuva_jowikufaka_tezupe.pdfIn PDF document text
    • https://lefamadagizid.weebly.com/uploads/1/3/4/7/134704745/8100021.pdfIn PDF document text
    • https://tevav.co.za/YmrXLWy8?keyword=how%20to%20change%20a%20thermal%20fuse%20on%20a%20kenmore%20elite%20dryerPDF link annotation
    • 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000bdf3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000bdf3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDF3 16124 bytes
SHA-256: b6dd3e0c61eff9bda5bd708d534c39aa846b9ada49e0c075604bd30cb9bb2435
font_01_sfnt_off0000e817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE817 11308 bytes
SHA-256: 8f091dbe1979f93d1c54069a0a47ae423c6a2f7cef5620ad80058e1570c34557
font_02_sfnt_off00010250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10250 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1