Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8f113329eb80720…

MALICIOUS

PDF

79.6 KB Created: 2021-06-05 03:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: babb3ebb538e646d161b3304ba240c39 SHA-1: 19a7d15e538724fe831d3d4dc412e35426a5b9c1 SHA-256: b8f113329eb80720080d85d58faac9b8333d74bb307ee37a32862e8f28eee3e4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body's text, 'How to get ifruit app on gta 5 xbox 360', is a lure to encourage clicks on these links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8675

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://medvor.ru/uplcv?utm_term=how+to+get+ifruit+app+on+gta+5+xbox+360 PDF link annotation
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160916555c820d---bipewi.pdfIn PDF document text
    • https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/rbe5nh3njkr5ln98js7atm6gff/lutubikediboda.pdfIn PDF document text
    • http://divorcefinance.nl/uploads//file/kisimuzosebik.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/4e49d59b0bbebdadbeda6e4630e26b40/48302215477.pdfIn PDF document text
    • https://bdsvieclam.com/upload/files/57691471675.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b997dc21237---2319737456.pdfIn PDF document text
    • http://dzstock.com/Upfiles/file/16984764539.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607da8ab651a4---33805089247.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae2dad6b9cf---gazonabenofefo.pdfIn PDF document text
    • http://imcborivali.org/userfiles/file/pominisifuwa.pdfIn PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/20215261046211707.pdfIn PDF document text
    • http://cascinamana.it/userfiles/file/48140074198.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/c8ea4102782fa343da9d00a65ab523d7/70323163339.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609d06cd36aa3---tavulat.pdfIn PDF document text
    • https://www.bistro-e.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b386e9c8e2---13293466830.pdfIn PDF document text

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