Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa808e81a87e4e71…

MALICIOUS

PDF

240.9 KB Created: 2022-03-12 07:48:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: ee612b75565327da20bb6416a866341b SHA-1: d912b767178bc8b3623c343375bfb4952805b475 SHA-256: aa808e81a87e4e71d8ce4d4706faa3e55f0341dc8a6bf67fe5cd41804661ecdb
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8900

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
  • 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.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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/XSRYdR1H?utm_term=magnesium+die+casting+design+guide PDF link annotation
    • http://zonatourism.com/media/ck/files/dazuronuxapolefod.pdfIn PDF document text
    • https://www.studioline.ie/ckfinder/userfiles/files/sizakugitafebam.pdfIn PDF document text
    • http://yishiweb.com/upfiles/files/20220201_133116.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/162175b4d8b00d---29792578105.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621fa198f1951---sovujaruvazedi.pdfIn PDF document text
    • http://cpgny.com/userfiles/files/57721216610.pdfIn PDF document text
    • http://bptramptour.pl/files/file/8008866252.pdfIn PDF document text
    • http://xn-----6kcaheblih5ab0a6afqbzoqe.xn--p1ai/ckfinder/userfiles/files/pipaxakezixatuzafofegik.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/jpsm1kueui1ggq758m97c24rhl/sifivufobapisosikogipe.pdfIn PDF document text
    • https://www.yamanosake.com/js/kcfinder/upload/files/74275974732.pdfIn PDF document text
    • https://stl-log.com/htdocs/cljr/data/files/besujiretimenumoxije.pdfIn PDF document text
    • https://vida.posilatko.cz/files/wswg/file/benumojukizurob.pdfIn PDF document text
    • http://bronia.org/userfiles/file/nizosel.pdfIn PDF document text
    • http://vip-cond.ru/userfiles/file/304908436.pdfIn PDF document text
    • http://bulk-supplies.com/userfiles/files/bomukinutujafagetomuw.pdfIn PDF document text
    • http://www.fichetalmeria.com/admin/kcfinder/upload/files/78317678801.pdfIn PDF document text
    • https://www.kazaviaspas.kz/app/webroot/js/kcfinder/upload/files/77074228872.pdfIn PDF document text
    • https://insinkerator.us/images/uploaded/file/pigujixuxexikewukona.pdfIn PDF document text
    • http://spasm-sympo.org/uploads/ck/admin/files/83404955841.pdfIn PDF document text
    • https://nomortiga.com/contents/files/94455774118.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000356f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x356F7 10540 bytes
SHA-256: 393a064acd58776f5bdcb10145beb102b348e721220d4b3510d4d44f1831e1ea
font_01_sfnt_off00036ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36EC5 17992 bytes
SHA-256: 2ec9b13c68a38d493365d660726a7990240c691d6015de41cdcaa5fecf45e436
font_02_sfnt_off00039e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39E02 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9