Malicious PDF — malware analysis report

Static analysis result for SHA-256 d315ac9bc2dd4de2…

MALICIOUS

PDF

69.8 KB Created: 2021-08-08 03:48:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6d1800e421613019a410172e7a9a0061 SHA-1: 4ba6a89c52a1dca6f057df1a2e1143711c2fbbce SHA-256: d315ac9bc2dd4de281beefd9cab130a7c13175eddf006c1c2b74c015b5fe2ed5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that contains a large number of external links, many of which point to compromised WordPress sites or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of numerous URLs suggests a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9583

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://inwebjor.ru/uplcv?utm_term=how+to+improve+turn+radius PDF link annotation
    • https://alexandrapanayotou.com/web/images/static/file/4129325112.pdfIn PDF document text
    • http://hibertek.com/image/files/20210629_083135.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/c73dac51234470d6780b7f3b1891a65a/bubowafuvinalo.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076bc716c1b2---45864901757.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aab97c92ef6---tanos.pdfIn PDF document text
    • http://riverbendhay.com/clients/4/4e/4e1cbd84181290ddb66fb035c9950ff6/File/gawigoxigagujaru.pdfIn PDF document text
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/da09c618b26d362bc7d69004e06bc11a/nalufekasixaf.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b368dc66e7---kidemebuvated.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/povosata.pdfIn PDF document text
    • https://ubranni.com/uploader/files/15282109785.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160898e43d0ece---lofekedunafepiwiburuvof.pdfIn PDF document text
    • https://msvadba.ru/files/file/guzuperevop.pdfIn PDF document text
    • http://kath-kiga-bw.de/bilder/berichte/file/72864395960.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/1kkmc43c0gp51f3gl707ppv4n7/livuxuliwisivojexi.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16075e455ad442---24052407925.pdfIn PDF document text
    • http://polskienarty.pl/data/aktualnosci_imgs/file/25243380737.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606ea3542c13c---bozusofebiwulofifoka.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/jtn931vb5gh2itr5au1k77vk54/bilavala.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/kleab2phg36hntjbjh9691kskt/gunegogojaxekazaw.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/5da53307929d2b37b17e04c1911ec8bd/10464270925.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ab33d11cd57---90340433527.pdfIn PDF document text
    • http://vejwun.cz/images/nofag.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/624f1e1d4a15f341348db9fbfed4d270/wapabinipiwaxup.pdfIn PDF document text

Open this report in the interactive analyzer, or submit your own file for analysis.