Malicious PDF — malware analysis report

Static analysis result for SHA-256 347bb938beeeabde…

MALICIOUS

PDF

41.5 KB Created: 2021-07-06 07:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9c895f5d407af65b5bdc459efc02ad27 SHA-1: c428825b1e5149353a5694146fc68998fe49cd0c SHA-256: 347bb938beeeabde341458ed6094a3c2e6304554ecf9804024a912fea6350e11
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier. It functions as a link farm, presenting numerous URLs hosted on compromised WordPress sites and disposable domains, likely as a lure for users to download malicious content or engage in phishing. The PDF's structure, containing only an image and a click-outward action, strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8353

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://catamma.ru/uplcv?utm_term=kmspico+for+office+365 PDF link annotation
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/7210d1c513e9361d03d63bfb14ceb549/wanonidibomabesolowejusup.pdfIn PDF document text
    • https://aimtronu.org/userfiles/file/foxipowipiwadosomerovegi.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a8da2614a31---vexanaropowiluzofawax.pdfIn PDF document text
    • http://samafb.org/uploadfilefiles/39839073457.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af9bbfd2e6d---34978657674.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160ab1983b386f---zisavutirusoxixi.pdfIn PDF document text
    • http://www.onlinetemsilci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a28169268---8641808643.pdfIn PDF document text
    • https://canionglobal.com/FCKeditor/file/vinajageritaxajenam.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/81ace7fd435aac56e3524835b8b9ba37/sokivos.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/xokajifelusogatenidawulo.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c750a90d68---27677611340.pdfIn PDF document text
    • http://inwama4.vn/webroot/img/files/40776536506.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607290c9c4201---81457663580.pdfIn PDF document text
    • https://muguet.fr/sites/default/files/file/razazimukexun.pdfIn PDF document text
    • http://moreit.ch/productinfo/file/vepejunibekojuzi.pdfIn PDF document text
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c8652b358c7---mujesivemoduk.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/udf3snafce6h9peah7lkq7c5d6/57720795395.pdfIn PDF document text
    • https://bkht.vn/userfiles/file/patalevuz.pdfIn PDF document text
    • http://popnmusic.fr/userfiles/file/73881361294.pdfIn PDF document text
    • https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/9ac4a5554ba6a4fade120338a8074050/tukapalazuv.pdfIn PDF document text
    • http://helderlive.nl/ckfinder/userfiles/files/13160759853.pdfIn PDF document text
    • https://toptenstudy.com/upload/files/BodyFile__60B21B5B53349.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/76787050096.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/049fd870890b18b77eaf7bcd21523164/mexiwawazolobivezufumazi.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/7ee7eb0f0aaa7eec458659a935c203b1/46939781289.pdfIn PDF document text