Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7c52077271bbe5…

MALICIOUS

PDF

88.7 KB Created: 2021-07-08 05:01:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a4f57f69b942e750b0ce905a051a9998 SHA-1: d5100f25ed42a77283790cd022f9267a0e290372 SHA-256: 1e7c52077271bbe58621ee2f61f4d7dc37bc6162d7ff0656a9cd2a8342ab212e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier. It contains numerous URLs pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://cructi.ru/uplcv?utm_term=how+to+draw+mk11+scorpion PDF link annotation
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d559c0970cc---mopezigib.pdfIn PDF document text
    • http://playbabydoll.com/userfiles/file/naxubunam.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608d07126168d---nikubexasem.pdfIn PDF document text
    • http://russkiivopros.com/images/FCKeditor/file/tupegogakutiposopif.pdfIn PDF document text
    • http://englandmatchshirts.com/assets/file/44093938500.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/88a348b9a87adde7e2868b1cf87dd4e0/kipusupafegimap.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/6c53917f6047fa86299984a826e5770c/woxagu.pdfIn PDF document text
    • https://afayl.com/userfiles/file/xifupi.pdfIn PDF document text
    • https://najlepsze-w-polsce.pl/uploads/wevasagusalex.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/900c8bf04db76925c9136f451136c781/witemuvubozanader.pdfIn PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/zotal.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607756fabcc92---11720948429.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/2150f3e265755aee4f8976b844e06060/46986508182.pdfIn PDF document text
    • http://artpolyclinic.com/file/files/24472036308.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160b5909ee0d79---befewaromawoxukajaxivom.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/16095e1bef1f8b---24583101892.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/wigulober.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/zemipeziwivotiwupu.pdfIn PDF document text
    • http://ebslang.net/_UploadFile/Images/file/11431664594.pdfIn PDF document text
    • http://bloomlight.pl/_bloom/file/kebape.pdfIn PDF document text
    • https://nhachoxebus.com/upload/fck/file/ketiwunizotigafired.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0564199e93---43433605875.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/c79aac69fc91eb43ade7b0781e93a4d6/dofegexuzevorevawaradot.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/37a30008668e65628a8cf701adf4bce2/22914549617.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160702c7369a86---zijebe.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000decd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECD 10716 bytes
SHA-256: ca00692a8fa69f223dc0f5b9a00127ffe5f4488c555d3d19dca9f93168575fe3
font_01_sfnt_off0000f77b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F8C 17772 bytes
SHA-256: c07bc96fcf3da784590002433c77d0a93fd4993b0f452a79fb292927b239f199
font_03_sfnt_off00012ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AC2 16292 bytes
SHA-256: 2feabf82bfac747b584c98f1d7a44d38e537bd373eda05e31a5e931f6d3dabea

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