Malicious PDF — malware analysis report

Static analysis result for SHA-256 7828e5df23c87bf1…

MALICIOUS

PDF

77.1 KB Created: 2021-08-31 17:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 49ac900cd305eba0a1dd7b0183e6a9f3 SHA-1: d16236fbca1587308d17565733feb21e259369fc SHA-256: 7828e5df23c87bf1804a6e12e39c8e78f0910a50a825bc29d21ccdad2872ebd1
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16077faf297cbf---xonaja.pdf In PDF document text
    • http://kiuanai.com/userfiles/file/durokirotazuf.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16078d355a4e54---24734586857.pdfIn PDF document text
    • https://85097781.com/upload/files/sisozomukavedozonewez.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/b75cb7844ea8801b576afed231c67068/relas.pdfIn PDF document text
    • https://vsetinrally.cz/userfiles/file/wotudotadatisokoxola.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/2fd4d0d26b7d6eb9b12b83c5c2eb0370/50402465404.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9a2aaaa36---dupuwakox.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/1b243fec1769293d1fe8a4430f8cc489/41706034221.pdfIn PDF document text
    • http://dioceseofniranam.org/userfiles/file/xifoba.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/xuzilovegipowakefuvukenu.pdfIn PDF document text
    • https://goodmix-psc.com/userfiles/files/lifubumanevarat.pdfIn PDF document text
    • http://www.microsinusectomi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f08b64746f---30244907767.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1606ed49b76d87---nusuvenobi.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0e33a56461---jasejulonigigen.pdfIn PDF document text
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/b4c9aaabd90c1f314b15c29079bd47df/84278300661.pdfIn PDF document text
    • http://eotp.info/sites/default/files/fck/file/88192149664.pdfIn PDF document text
    • http://livinglearningandworking.org/clients/e/e0/e05af8355f71d8da3aa90f500b9284b3/File/nemifarofokamir.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/87fc15eb1e9e2ab6f738d92edf6b0eb8/12547349924.pdfIn PDF document text
    • https://bettyloupaints.com/userfiles/files/37799391731.pdfIn PDF document text
    • http://skogsformedling.se/bilder_umeny/File/zisekezigenemizanegap.pdfIn PDF document text
    • http://dental-forum.ru/userfiles/file/12167246189.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac90fb5da1a---73601500686.pdfIn PDF document text
    • http://pensionpoint.cz/userfiles/files/vimiteper.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=ctet+previous+paper+pdf+with+answer+keyPDF 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_off0000c768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC768 17652 bytes
SHA-256: 3e27771a0762437c1450bad3c09399b497ded6f7f20fb03cd1ffe58dc487b0cf
font_01_sfnt_off0000f513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF513 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D2A 11040 bytes
SHA-256: 4e0bd288c991848c3a6b133530bf8b38e0f8274afefb884ec16e0df52b527959