Malicious PDF — malware analysis report

Static analysis result for SHA-256 a660047fd9251510…

MALICIOUS

PDF

52.6 KB Created: 2021-06-12 19:15:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2a60023e5857a319a3fc9f3bf9354109 SHA-1: 996ec9327f11883c199c7d5b747c2dfabb409e9a SHA-256: a660047fd9251510ec4856d0abf6eceb6271e9eb123aeb10fce23ab5925cd0dd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, many pointing to compromised WordPress sites, designed to trick users into downloading software. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The embedded URLs, such as 'https://crewmak.ru/uplcv?utm_term=adobe+photoshop+cracked+download+for+pc', are indicative of a lure to download potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7151

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://crewmak.ru/uplcv?utm_term=adobe+photoshop+cracked+download+for+pc PDF link annotation
    • https://www.kcequipment.com.au/wp-content/plugins/super-forms/uploads/php/files/edd73c0cc59e710cdc22f216d7ab3ee6/kiwimogatenisopipigefaz.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/4f91c0a0d9a9ec91bfa99befbf4b05d8/61371668393.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608923f1e1523---71022309152.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/512c479c03085030c927b1d06042541a/16094091778.pdfIn PDF document text
    • https://canionglobal.com/FCKeditor/file/92988574080.pdfIn PDF document text
    • https://carlojans.com/cms/file/28096918840.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/70752553173.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/009d54dd26b055421eb7192f5b199b6a/84978042429.pdfIn PDF document text
    • https://vicotelecom.vn/static/source/images/file/71261573578.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/52cvc9q9eep1noa1elgipel23f/33275200167.pdfIn PDF document text
    • https://cicadit.ro/UserFiles/file/42095191083.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/14132755402.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/98555011998.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/nurifaputojejufu.pdfIn PDF document text
    • http://prattsofdouds.com/clients/d/d8/d85aab9f4bcbae69c8358f7a9990a0b1/File/didowakasowelen.pdfIn PDF document text

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