Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca657acba3bdfd9c…

MALICIOUS

PDF

78.7 KB Created: 2022-03-30 04:39:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-07
MD5: 5826523383b2af496ea8d5af86cc2ba1 SHA-1: 5a89075fae39fedd0e641841146051a12c0fa8fd SHA-256: ca657acba3bdfd9cf2bb922da82cbaeec1009fa4a3541ec1584a043858f2fa03
211 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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
  • 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.
  • 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://wirut.co.za/YmrXLWy8?keyword=who%20are%20the%20characters%20in%20the%20mysterious%20benedict%20society PDF link annotation
    • http://kultpro.ru/userfiles/files/10214988265.pdfIn PDF document text
    • https://volosodavebogo.weebly.com/uploads/1/3/4/8/134873809/pixalutukuxusamomavu.pdfIn PDF document text
    • https://vesitunerenos.weebly.com/uploads/1/3/5/3/135338192/risoje-dadofupuzani-duzipadenija.pdfIn PDF document text
    • https://pinyardim.com/calisma2/files/uploads/wutokimozovurupusinibeteg.pdfIn PDF document text
    • http://adbrf.com/files/fckeditor/file/8506045006225ac882d028.pdfIn PDF document text
    • https://mizovitima.weebly.com/uploads/1/3/4/2/134266674/xedabowuxajikifewur.pdfIn PDF document text
    • http://ozt.zielonetarasy-cieplice.pl/uploads/userfiles/files/nitiragu.pdfIn PDF document text
    • https://kutinimi.weebly.com/uploads/1/3/4/6/134608846/jipemomagovevagam.pdfIn PDF document text
    • https://luxaxila.weebly.com/uploads/1/3/0/8/130814132/4799878.pdfIn PDF document text
    • https://mixajogidevo.weebly.com/uploads/1/3/0/9/130969427/zusex-wobupuges-zozedazadoze.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/162384befc7e48---gusom.pdfIn PDF document text
    • https://mbamantra.com/ci/userfiles/files/dodafiditevomuros.pdfIn PDF document text
    • http://grafitym.kz/files/file/8150680755.pdfIn PDF document text
    • https://faruroju.weebly.com/uploads/1/3/5/9/135986438/jejinovo.pdfIn PDF document text
    • http://levant-tekstil.com/other_files/File/45077045130.pdfIn PDF document text
    • http://asktasi.com/ckeditor/kcfinder/upload/files/3942687069.pdfIn PDF document text
    • https://xopilujipuwoka.weebly.com/uploads/1/3/4/8/134886601/7050ebc2bd2368.pdfIn PDF document text
    • http://ecogestval.es/userfiles/file/divagepasabefoxi.pdfIn PDF document text
    • https://topinsolventa.ro/userfiles/file/fojepajasabajegifubeloki.pdfIn PDF document text
    • http://strandkrabbe-hohenfelde.de/sites/default/files/files/6885735744.pdfIn PDF document text
    • https://ninuxegomozul.weebly.com/uploads/1/3/1/8/131871835/47a269660db7dd.pdfIn PDF document text
    • https://pujokabotavigel.weebly.com/uploads/1/3/7/5/137515201/ce21533e86d.pdfIn PDF document text
    • http://wannawwannie.pl/userfiles/file/27257100563.pdfIn PDF document text
    • https://sopunarexij.weebly.com/uploads/1/3/1/8/131857112/9353ab3.pdfIn PDF document text
    • https://lefelovavuj.weebly.com/uploads/1/3/4/6/134644752/3648082.pdfIn PDF document text
    • http://inimtrento.it/userfiles/files/5193641128.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000cdb6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cdb6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB6 10936 bytes
SHA-256: 78e77ee0bca6017fb34129340f047e84bf0d4b3a10f8aba68ec1b1e06950263a
font_01_sfnt_off0000e6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E5 17420 bytes
SHA-256: 5751454248232f7fcd54fdaffbde95a124c2b1b862a9d950f7cdd968daad47b5
font_02_sfnt_off000114c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114C2 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336