Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee194dc1f257d92…

MALICIOUS

PDF

130.8 KB Created: 2021-09-03 04:11:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: c27a39b56b4419886e07bda7b27c21ae SHA-1: 06318399371f7e6c6bd9f875acf2549a654f20e2 SHA-256: 7ee194dc1f257d92a0b28fa87600d649362af9d5d157effdf673966d7d24f1bd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a link farm pointing to numerous suspicious URLs, many hosted on compromised WordPress sites or disposable domains. The primary attack pattern involves directing users to these external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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://luyenthitoeic.info/userfiles/file/bobusexuratotaxazefufeteg.pdf In PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/ueivtesrvt6oomhrluqna10i2f/xavetapipaderetubufisagu.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/4b8b8777298c62faf049e9961dbcf0d8/fexisuzazis.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/6pcopeq6j6bpa2gs0k631qcfmf/dunopex.pdfIn PDF document text
    • http://protezas.lt/i/File/99658127565.pdfIn PDF document text
    • https://monyetjoget.com/contents//files/34606764648.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160750ec3717b0---goregemokerevawuredu.pdfIn PDF document text
    • http://limobebe.com/userfiles/files/2016035525.pdfIn PDF document text
    • https://ctapigroup3.com/contents//files/juderibikiwasoj.pdfIn PDF document text
    • http://cephedanismani.com/images/pages/file/32702370208.pdfIn PDF document text
    • http://ahrestygz.com/userfiles/files/20210710_085429.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b294ae5935---pudeg.pdfIn PDF document text
    • https://toptenstudy.com/upload/files/BodyFile__60C2ACE4598B4.pdfIn PDF document text
    • http://geodez.com/pliki/file/tunifujisejepu.pdfIn PDF document text
    • http://zulassungsservice4you.de/bilder/file/bigazoragoba.pdfIn PDF document text
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e464c49307d---11828735207.pdfIn PDF document text
    • http://zuche0551.com/upload/file/80137289797.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/883e8d330f3113c0453cec3a3b18233d/perowaliba.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160793d69cf087---buxufewutesatig.pdfIn PDF document text
    • http://suachuadienlanhhoaphat.com/hinhanh_fckeditor/file/jifobebiguxaf.pdfIn PDF document text
    • http://hujiangsy.com/upload/files/takinixu.pdfIn PDF document text
    • http://ladyqueen.it/userfiles/files/vesitokajebokoda.pdfIn PDF document text
    • https://vmwarts.com/ecovic/file/71813700286.pdfIn PDF document text
    • http://consulcongress.it/uploads/assets/file/55230768276.pdfIn PDF document text
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070cc30285f6---jenomubosi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=a+practical+theory+for+designing+very+deep+convolutional+neural+networks.pdfPDF 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_off0001951a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1951A 19788 bytes
SHA-256: 8460d9b7fab769c21131abbad663da0a115668bb27757b87b4381f4fa4b775cf
font_01_sfnt_off0001c9bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C9BB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001e1d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E1D2 11404 bytes
SHA-256: ddd3b26e79a6535993b40ad78de31486d09b444269277b45fb5a990b9fd84a6c

Open this report in the interactive analyzer, or submit your own file for analysis.