Malicious PDF — malware analysis report

Static analysis result for SHA-256 062407f610a6d1e0…

MALICIOUS

PDF

70.6 KB Created: 2021-06-10 01:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7138657811d241d80563c2587352173a SHA-1: 8d3c78546317755520a2a144e4b1ca870dc74e0b SHA-256: 062407f610a6d1e09dd1527dd83327512c46b168342cbfc02095c547706cfff5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to compromised WordPress upload directories, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure indicate an attempt to distribute malware or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8212

Heuristics 5

  • 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
  • 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=phoenix+tears+the+rick+simpson+story PDF link annotation
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/196b7b12db92bc78f182f0c893b9ddba/tosorewigeg.pdfIn PDF document text
    • https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/c7e2e15d18345c00fad28de9c6cb2401/gomowigoripoginadomode.pdfIn PDF document text
    • https://ludbaegitim.com/calisma2/files/uploads/99666129589.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab56789a5e7---desugukusixufifarokiv.pdfIn PDF document text
    • http://matstravel.ru/userfiles/file/davukedusuvobeginifo.pdfIn PDF document text
    • http://kompletucetnictvi.cz/files/file/benuna.pdfIn PDF document text
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/af136dc0b4c4f1078a9048b1b98d7630/kezasemunagevibigabu.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/f47180b3b9ed456a5122e18d42fee4e8/90791108665.pdfIn PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607705bfd7420---bonaxirelovap.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606f145018139---notofuvo.pdfIn PDF document text
    • http://www.hangmandigital.com/files/file/powosata.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/7khlijojukpb5eadme6450q7j5/82430815142.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/79fc3bdc2dad46dca3ee72bfab96bd17/gufunuxisim.pdfIn PDF document text
    • http://funperm.ru/content/file/getabobuxo.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/midikil.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/pb49td7vvkh5b0k3l9t6hrqv0f/fobefuboxat.pdfIn PDF document text
    • http://atek-ent.com/upload/file/muwokerivumonisimi.pdfIn PDF document text
    • http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/pizimubodomeruronuraxe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA5 5376 bytes
SHA-256: c046e87d58a62d04408d2a427916e0ad5a534960baf3b1636fe75ca60271438e

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