Malicious PDF — malware analysis report

Static analysis result for SHA-256 d64768bfb8d3cfe0…

MALICIOUS

PDF

64.0 KB Created: 2021-10-06 17:23:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 6e2e190068eebf73f01258c5206b48f7 SHA-1: 341b150bead08fe31155deb96d269000d3ee8e2e SHA-256: d64768bfb8d3cfe0518cd87e742ef8d8115b81d073cade872f640cd4a6b9da18
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated maliciousness. It contains a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute malicious content or phish users. No scripts were extracted, but the structure and URL analysis strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5460

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 http://bdpq.hungminhits.com/files/uploaded/files/72448403786.pdf In PDF document text
    • http://dinskayarealty.ru/media/file/silezoxexubifibegob.pdfIn PDF document text
    • https://dom-titan.rs/files/xuvanotikisofugoj.pdfIn PDF document text
    • http://ambulatorioveterinariorigolon.eu/userfiles/files/23446053455.pdfIn PDF document text
    • http://studiotecnicomartani.eu/userfiles/files/roraginemosanebavopad.pdfIn PDF document text
    • http://chocoenglish.com/_UploadFile/Images/file/34012845235.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/8468432b271b06f7d16f3694f8ecfb39/4538106483.pdfIn PDF document text
    • http://gr-chem.com/upload/files/51146227673.pdfIn PDF document text
    • http://2222.netsociality.com/upload/files/10426376705.pdfIn PDF document text
    • http://laserinnsbruck.com/static/zabimetibazaketo.pdfIn PDF document text
    • https://unitedfightalliance.com/ckfinder/userfiles/files/wekojajodon.pdfIn PDF document text
    • http://tabouligrill.com/ckfinder/userfiles/files/texagikamul.pdfIn PDF document text
    • https://drhuanghair.com/uploads/files/202109290211587015.pdfIn PDF document text
    • http://enidental.com/userfiles/file/20210903113815.pdfIn PDF document text
    • http://hyundaihungthinh.com/uploads/images/files/36505582348.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16152bcf674fcf---97670911994.pdfIn PDF document text
    • http://candientushinko.com/images/file/kejapaxadod.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/58379591911.pdfIn PDF document text
    • http://eurosolar.cz/res/file/zebebubosilegizozirewu.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/8d2b3e0dbf00d99397c4da590111a759/35839440802.pdfIn PDF document text
    • https://firesystem.ro/imagini_ws/33228662370.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/83119482989b3c276d09fa5d90c49861/fikes.pdfIn PDF document text
    • http://iccjsc.com/images/uploads/files/29835472443.pdfIn PDF document text
    • http://travelcenterpuntos.com/campannas/file/zalodaramivexusat.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=at+middle+agePDF link annotation

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