Malicious PDF — malware analysis report

Static analysis result for SHA-256 79312571e80cd113…

MALICIOUS

PDF

428.3 KB Created: 2022-01-19 07:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: 2b14c9c6ccb51cc78873e214ea1b278c SHA-1: cd44bd8eee9a4acf4ea8bd65059ae944192939ba SHA-256: 79312571e80cd113c91f0af639156faaacc4ede2621cbf4d0722b16391917c96
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5001

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
  • 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.
  • 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 http://poexali.org/static/image/_u/system/files/36209381595.pdf In PDF document text
    • http://dc-a0dcf319a153.breakthroughsport.com/userfiles/files/sesuzi.pdfIn PDF document text
    • http://chulatutoracademy.com/chulatutor/ckfinder/userfiles/files/58982878797.pdfIn PDF document text
    • http://internationalelectric.ru/test/sites/default/files/file/dolasolub.pdfIn PDF document text
    • http://aromaonly1.com/yamituki-n/uploads/files/supozibupuwivikazorudituk.pdfIn PDF document text
    • http://lrm.mcdonalds.ua/ckfinder/userfiles/files/sixewodevise.pdfIn PDF document text
    • https://euro-m.si/web/dokumenti/file/75526017759.pdfIn PDF document text
    • http://dnt-mayak.ru/content/File/17023822471.pdfIn PDF document text
    • https://sanaspinler.com/calisma2/files/uploads/gibutizonolojotufik.pdfIn PDF document text
    • https://renewone.de/files/likawa.pdfIn PDF document text
    • http://pnlestari.com/visitbali/image/files/kuditujemepur.pdfIn PDF document text
    • http://sbriz.ru/userfiles/file/fenegujur.pdfIn PDF document text
    • https://irepairplus.nl/app/webroot/files/userfiles/files/wadaxidokubejoravesisa.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161808ab5baab7---rezodofejomazujazi.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161408b9b3116c---lugasexekomag.pdfIn PDF document text
    • https://areicon.com/images/file/wegiridude.pdfIn PDF document text
    • https://nffcd.org/userfiles/files/tijigajigagek.pdfIn PDF document text
    • http://ouhkpthaa.org/userfiles/79812923771.pdfIn PDF document text
    • https://siroyensao.com/upload/files/60820916750.pdfIn PDF document text
    • http://aedjtj.pretty-match.com/upload/files/girujisesipetidakejese.pdfIn PDF document text
    • https://rabudiagnostic.com/userfiles/files/juxupupajup.pdfIn PDF document text
    • http://air-separation-supplier.com/d/files/98612640483.pdfIn PDF document text
    • http://liga-stf.ru/i/upload/files/94105128041.pdfIn PDF document text
    • https://cobrawire.com/userfiles/files/kaxipokajakawalavakiwokaj.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1614420d699d56---juvanazedekepo.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/xPAns0MRe5M/uplcv?utm_term=solving+linear+systems+by+graphing+worksheet+answersPDF 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 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_off000641d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641D8 18080 bytes
SHA-256: a868db4c960750abb12a73e80194c36b8c9298c71c2ea628fde935e658ff2ce6
font_01_sfnt_off00067058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67058 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000686fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686FC 11272 bytes
SHA-256: a3f00c0beda82fd478d7edc6d24ccbed651e8fbe584396a1820f4877b7b5dc34