Malicious PDF — malware analysis report

Static analysis result for SHA-256 7176f1dc5ffda2b8…

MALICIOUS

PDF

90.9 KB Created: 2021-06-25 15:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 0e6cc6ad5c21dd3e49cc5f5cf92eadee SHA-1: 70470b3e152261cfda70357bcff7b496a20c0316 SHA-256: 7176f1dc5ffda2b89276bd082ae114c5026582ffe89f6eced0791ac6cb41f062
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating it's likely a phishing or malware distribution lure. The heuristics reveal it functions as a link farm, pointing to multiple compromised WordPress sites and other domains hosting similar PDF files. While no scripts were directly extracted, the nature of the links suggests a potential for further malicious content delivery or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • 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://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/la7r1j5ut5oj1tiniaen1pk2ll/1926018110.pdf In PDF document text
    • http://degeninhotel.ru/admin/ckfinder/userfiles/files/73380525848.pdfIn PDF document text
    • https://feniks9.ru/ckfinder/userfiles/files/zonamafoxodiwexeruzejir.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/ji54oj93u27bcnihqoku9j2d15/69395876070.pdfIn PDF document text
    • http://ateliergermain.net/sites/default/files/file/susovarijibed.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609b9af45b136---gumobajululexolo.pdfIn PDF document text
    • http://chupanhnoithat.vn/upload/files/diripanap.pdfIn PDF document text
    • https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075f667b3c16---porelefakusamupo.pdfIn PDF document text
    • http://xlsferrosilicon.com/d/files/65760046769.pdfIn PDF document text
    • https://kede.org/userfiles/file/25357764134.pdfIn PDF document text
    • http://c2ctrading.org/cms_upload/files/raromatejim.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/50q16earuo8uiiapdaaelab2g0/58857854552.pdfIn PDF document text
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/ad3942981458e1b9b46c673d81849a52/pibolewavanilobopozi.pdfIn PDF document text
    • https://bloomland.com/sites/bloomland.com/files/nowozunumevit.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/rr5pq8kpml4femnnjvh9lc3v31/gorixopugugadefa.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072745f48402---30458604075.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160986abfba8b3---mekixuponurezamikixot.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=average+sea+level+is+affected+most+by+globalPDF 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_off0000fc65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC65 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11477 18856 bytes
SHA-256: 3a4756da6ddd5ca4d4692822c43785f2de8ba5035d625d5154acea3e9d6faf29
font_02_sfnt_off00014540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14540 11016 bytes
SHA-256: c47fc3a3b6be96314888d8e081efac4dc32ceda436bf3df5d919f6809b8ebb30