Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95d46024c57e483…

MALICIOUS

PDF

70.6 KB Created: 2021-07-21 01:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 1ba4e8a25a2a5e8120888411405beb44 SHA-1: e5136cfced29fd5c3985d84b351e15e2ec29aa85 SHA-256: e95d46024c57e4832702fd0af0a1f6bf5ce4fd159adfa0b8aca767f8b85347e3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised WordPress upload directories. These links likely serve as a distribution mechanism for further malicious payloads or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6323

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://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a47e80d319e---tetadavis.pdf In PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1b856013fc---ribem.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/9866k1ns1nrc9q24ov0tloecj2/45494111465.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/16079f0e753fff---zutili.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6c0667ae0---75063462965.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/d8kje9i2l5o17089i5trbr960o/16118471546.pdfIn PDF document text
    • http://abwingsva.com/uploads/files/74099741505.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/d356db07a86bbf8e0329b99b39291160/75347901429.pdfIn PDF document text
    • http://dchs1961.com/clients/871949/File/nuruxulafibexito.pdfIn PDF document text
    • http://cs-web-design.de/ablage/userfiles/files/mefezesalaroxubus.pdfIn PDF document text
    • http://cybernet.asia/UserFiles/File/vuxonesobegopivafixajuz.pdfIn PDF document text
    • https://systematix.pl/userfiles/file/fezurutodelesasezileg.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/ohu2b736dl6hvoo5m28csu0ipp/matiwasux.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/basoxusezuvafewisenevoji.pdfIn PDF document text
    • http://sampsonancestry.com/clients/d/d9/d9bd9208c4e45de01aa31840e3a8c66b/File/webupadoxiledozarebas.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160702e9e6e748---vagawidumufelugaladebin.pdfIn PDF document text
    • https://ukmalayalamnews.com/userfiles/file/86545317432.pdfIn PDF document text
    • http://lapenya.cat/imgjovesnaves/file/gilotafugogetuvamezapa.pdfIn PDF document text
    • https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160730d723e195---53972431779.pdfIn PDF document text
    • http://dobrejaja.com/Upload/file/xemedanoxovipudowufo.pdfIn PDF document text
    • http://titusrelay.com/clients/e/ef/ef304ccc03541e9e6382bef5f13b0a7d/File/webexutufisiju.pdfIn PDF document text
    • http://a-swiss.com/upload/userfiles/file/nebefu.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/470f17199482bcc8732954674cf5e932/jitod.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/3804856d1438b0dc1a8bbc0cd15e2387/vipuza.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=brooklyn+unboxes+the+worldPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001052b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1052B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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