Malicious PDF — malware analysis report

Static analysis result for SHA-256 de491c7b395a66e6…

MALICIOUS

PDF

352.1 KB Created: 2022-03-10 21:06:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 3ffe92ee1d0f6c1bd1cc41111380357d SHA-1: a573c354ad5d20e7f787c55181872bdc0785af4f SHA-256: de491c7b395a66e6a79a908a691eece0bb6d35dac5caef4ba4a229be4bde6a9d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6817

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 https://podar.co.za/XSRYdR1H?utm_term=counter+strike+online+game+no PDF link annotation
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16215f6b874fc8---mujupokujenaz.pdfIn PDF document text
    • http://nirmalapublicschoolerumely.com/userfiles/file/xasajoge.pdfIn PDF document text
    • http://veterina-hrib.cz/user-uploads/files/50063134141.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621c1feb087bf---futiwopu.pdfIn PDF document text
    • http://kungfubp.hu/admin/assets/images/files/71685825948.pdfIn PDF document text
    • http://cuuthuong115.com/ckeditor/kcfinder/upload/files/55271984347.pdfIn PDF document text
    • http://skkl.cn/filespath/files/20220305165554.pdfIn PDF document text
    • http://riph.pl/userfiles/file/lajugosisasor.pdfIn PDF document text
    • http://nevacomposites.com/public/kcfinder/upload/files/53887265482.pdfIn PDF document text
    • http://arieslog.com/assets/ckeditor/kcfinder/upload/files/41937908985.pdfIn PDF document text
    • https://dioss.eu/files/ckfiles/file/96347892769.pdfIn PDF document text
    • http://d2dgroup.net/upload/files/xevilotubewurunoxumize.pdfIn PDF document text
    • http://faithleader.org/js/ckfinder/userfiles/files/97034582100.pdfIn PDF document text
    • http://muszosz.hu/_user/file/24728343607.pdfIn PDF document text
    • http://installmysolar.com/userfiles/file/liful.pdfIn PDF document text
    • http://chestheart.org/assets/ckeditor/kcfinder/upload/files/vivevukepiwutorigexebovo.pdfIn PDF document text
    • http://szamosiszerviz.hu/feltoltott/files/78956932905.pdfIn PDF document text
    • https://cebrigantina.com/025-CEB/images-editor/file/foxubu.pdfIn PDF document text
    • http://infrabud.eu/fckpliki/file/91191140017.pdfIn PDF document text
    • https://dolaodong.com/userfiles/file/porabi.pdfIn PDF document text
    • http://administrace.proceram.cz/files/10128417741.pdfIn PDF document text
    • http://trivio.it/userfiles/files/62189321128.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/162219b33b4181---1367106479.pdfIn PDF document text
    • https://doublehaircenter.com/upload/ckfinder/files/4304171473.pdfIn PDF document text
    • http://analizmatbaa.com/panel/kcfinder/upload/files/875652235.pdfIn PDF document text
    • https://ihappywash.com/uploads/files/202202130448471358.pdfIn PDF document text
    • https://drproperty.org/userfiles/file/48275521258.pdfIn PDF document text
    • https://juniorclublivorno.com/sitonews/images_upload/files/xajideluzerobu.pdfIn PDF document text
    • http://fuguchair.com/upfolder/e/files/20220225143735.pdfIn PDF document text
    • http://partynfun.com/kcfinder/upload/files/nuzoxemama.pdfIn PDF document text
    • http://kuzfarm.ru/images/file/majodozasixomaruba.pdfIn PDF document text
    • https://skopjemuzikon.pmgrecordings.com/ckfinder/userfiles/files/xazegubakeduruvedujekebep.pdfIn PDF document text
    • https://novamakine.com/upload/ckfinder/files/tizixapojewenazonugu.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/004f449748afbb9bd9a84961b0213809/59051692667.pdfIn PDF document text
    • http://technocom.pl/editor/file/63086695760.pdfIn PDF document text
    • http://aitrans.net/UploadFile/file/F1202202260923386989.pdfIn PDF document text
    • http://www.ipsc-pv.cz/kcfinder/upload/files/65638709351.pdfIn PDF document text
    • http://msiutilities.biz/documents/61743610931.pdfIn PDF document text
    • https://coil.hk/upload/files/12675697739.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_off0005131c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005131c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005131c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5131C 17512 bytes
SHA-256: cc01350163e83a04d6a3dcad6bc6fd49f503552de623ab14a4be600755c62a9c
font_01_sfnt_off00054101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54101 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00055821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55821 10676 bytes
SHA-256: 0a18aa55739da09228144648ea8fe41db8b42b9fc056e97b45392995762fd83c