Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e180b32ffc9d7fe…

MALICIOUS

PDF

101.9 KB Created: 2021-08-16 09:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e20cd04f958fb32a8167567263a571a3 SHA-1: 84cdab5e38e55cca4f97eb6582cb7ecec83eab36 SHA-256: 0e180b32ffc9d7fe0df7722967f4dc60d6c3f9ba0448d95bb030dbbf481ba8c6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • 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://philabc.ru/uplcv?utm_term=ki%C5%9Filer+aras%C4%B1+ileti%C5%9Fim+engelleri+slayt PDF link annotation
    • http://bjbtrh.com/files/pic/file/82338414515.pdfIn PDF document text
    • https://computerzone.pk/file/bidabisir.pdfIn PDF document text
    • https://2acontractor.it/images/file/74005254298.pdfIn PDF document text
    • http://trendybiz.in/usersfiles/file/befotaxuzaderalaweviduvik.pdfIn PDF document text
    • https://sy-tech.eu/file/86591902933.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/nowofufis.pdfIn PDF document text
    • https://hissekurban.com/resimler/files/vitabi.pdfIn PDF document text
    • https://tonwen.org/userfiles/file/gavijumatifa.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a72b0f2416---66959077872.pdfIn PDF document text
    • https://printsolutions.ro/uploads/wysiwyg/files/gejogagofoger.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/6f0fd7a542f55afeb6debc9503134f8d/fupozeponomuzetit.pdfIn PDF document text
    • https://metal-et-verre.ch/ckfinder/userfiles/files/39590511484.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/abeb0de295df1cba9cbdccd1977697fa/15638284917.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081f4e66ca84---magaraferas.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d22f6c451f---8036066750.pdfIn PDF document text
    • https://presentkompaniet.com/img/content/file/welevunipurejixokivusise.pdfIn PDF document text
    • http://brainbond.ro/userfiles/file/73169515285.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160726cc1b6289---57726310820.pdfIn PDF document text
    • http://emilygrilltogo.com/uploads/files/23158597596.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/a8c2c434945e491cc6b950406a9a1d16/15692283166.pdfIn PDF document text
    • http://chono.mn/uploads/userfiles/files/zozozasabajonozanewifewo.pdfIn PDF document text
    • http://szermgrt.hu/uploads/ckfinder/userfiles/files/97546362749.pdfIn PDF document text
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/024663910d6a3ed9b96f211b0dc1eb5c/65591765007.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 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_off000125e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125E9 10724 bytes
SHA-256: 79b76e0cad6ce18fd8fc22ddf61e366bd681f9312e7a286506f01fe7f3556a3c
font_01_sfnt_off00013dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DFD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001560f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1560F 20240 bytes
SHA-256: c4f1d074451e2ff3f7de52af32a31d41cb7f072a24feff174e1f6876749fcf13

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