Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff23e87e3551f907…

MALICIOUS

PDF

422.3 KB Created: 2022-04-02 15:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-13
MD5: 08e73dc43b87448fb8db63c64f94d739 SHA-1: 1d736704d1e647d9233647138650958a7d81b851 SHA-256: ff23e87e3551f907bddb264b1f515141c3c73ea7e0fa91517dc90f07ab65a93d
161 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3450

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.
  • 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.
  • 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://colod.co.za/XSRYdR1H?utm_term=cleveland+abduction+full+movie PDF link annotation
    • https://fezuwujazu.weebly.com/uploads/1/3/5/3/135347069/8bb5d720f2a9.pdfIn PDF document text
    • https://ziwarojuwetupo.weebly.com/uploads/1/3/4/3/134343479/6897933.pdfIn PDF document text
    • http://namjapizza.com/app/webroot/files/75205239836.pdfIn PDF document text
    • https://chmelo.hu/sites/default/files/file/tagesuwekatived.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/28346791758.pdfIn PDF document text
    • https://josudumebumokix.weebly.com/uploads/1/3/4/0/134040650/6af9db8f4f.pdfIn PDF document text
    • http://pestaurace.sk/upload/files/dibitosujiterewuzop.pdfIn PDF document text
    • http://alseera.com/admin/kcfinder/upload/files/45759652020.pdfIn PDF document text
    • https://zobovakobazazu.weebly.com/uploads/1/3/4/3/134319401/pokowazikuj_tamujuporir_rujes.pdfIn PDF document text
    • http://mygotour.com/FileData/ckfinder/files/20220212_D111C4F8D5747E12.pdfIn PDF document text
    • http://resortcrimea.com/ckfinder/userfiles/files/loseduxenufutisujedubidow.pdfIn PDF document text
    • https://bileravufal.weebly.com/uploads/1/3/4/7/134749654/8756402.pdfIn PDF document text
    • https://bcinterior.gocascadia.com/images/cms/file/karet.pdfIn PDF document text
    • https://mmgrowersg.com/ckfinder/userfiles/files/nalosuzuvosugemawog.pdfIn PDF document text
    • https://harom.ro/files/file/72157247804.pdfIn PDF document text
    • https://xafuraworeduvux.weebly.com/uploads/1/3/4/7/134752052/waramelorijeru.pdfIn PDF document text
    • https://www.icfost.org/public/kcfinder/upload/files/91973906821.pdfIn PDF document text
    • http://apisicul.com/userfiles/files/33832693078.pdfIn PDF document text
    • https://wenigekotowas.weebly.com/uploads/1/3/4/5/134576851/zixozaxogisinip.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/162030c26442a3---bugaloraz.pdfIn PDF document text
    • https://rojumiladikeju.weebly.com/uploads/1/3/4/3/134315163/d3a767c3e18.pdfIn PDF document text
    • https://www.steyr-mannlicher.hu/admin/kcfinder/upload/files/senepurow.pdfIn PDF document text
    • http://cadex-forensique.ch/app/webroot/kcfinder/upload/files/36081058262.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1620d257b2e890---wijiboredikepibilasi.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/162072f85a2e5d---pudadajikigeteverajufije.pdfIn PDF document text
    • http://bjsddesign.com/filespath/files/20220226161202.pdfIn PDF document text
    • https://mail.conepe.org.br/public/ckeditor/kcfinder/upload/files/vijanapida.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1622b3918df2f0---49253563173.pdfIn PDF document text
    • https://fekijurem.weebly.com/uploads/1/4/1/2/141258709/91fb5870e4117b.pdfIn PDF document text
    • https://muwikoli.weebly.com/uploads/1/3/2/7/132740525/komogimaxobezan_jukodula_mebukibiti.pdfIn PDF document text
    • http://winagain.co.za/kcfinder/upload/files/60389622575.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/kodoxo.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_off00060a3b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00060a3b.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00060a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A3B 10704 bytes
SHA-256: 32014681b43a1f5490a4c6d7463615e61d32cb83a44d2df5f542e9e837165c83
font_01_sfnt_off000622c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622C0 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa
font_02_sfnt_off000638c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000650d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650D6 21868 bytes
SHA-256: a0977ee17249ef42815fccdd2e578f6fdd89d448be1fb746ff09fa452bb3131b