PDF malware analysis — malicious · 77227e2855f94862

MALICIOUS

PDF

196.1 KB Created: 2021-05-07 18:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 2629f9473536db5b6f4f98a4956001c2 SHA-1: 2268b17537f8a44b698bd95a755bb8a3e92d68e9 SHA-256: 77227e2855f94862e6e36d6d54e1008b0d1cba9ecd619b70b987c3d142ade894

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9713

Heuristics 4

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.
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://infrive.ru/uplcv?utm_term=2014+marshall+cavendish+education+pte+ltd+answers PDF link annotation
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16093532c3e2a3---27467787069.pdfIn PDF document text
- https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/g5f6qne027iu16f9jda0ifo24f/26797858086.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609401f8cbff6---logudexemewesejejozowev.pdfIn PDF document text
- https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/483ae13ef351e360e8fea23ae50600cc/buwaxegiwowotege.pdfIn PDF document text
- http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16071547e17a2c---vivis.pdfIn PDF document text
- http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608445a9a152c---rasirokutap.pdfIn PDF document text
- http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079565d13bd7---94487634228.pdfIn PDF document text
- https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/va4ba19ed8jme7j8flvop90pn4/devefidodot.pdfIn PDF document text
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/lf7q4roguuh3ms23i4shcgc6up/bugubewitodipobu.pdfIn PDF document text
- https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/c649253afe84b828c578895695af6593/2602954159.pdfIn PDF document text
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/16090fcc6be14b---zoriwadimev.pdfIn PDF document text
- https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/g0vceii95oqm665b2icfen3aeu/nekaribesisa.pdfIn PDF document text
- https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/a10cfd81a7fb031a6d51188121a5a7d4/sonovebe.pdfIn PDF document text
- http://acpiindia.com/userfiles/file/33655759265.pdfIn PDF document text

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