Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5e4e6d5862ff1e8…

MALICIOUS

PDF

87.3 KB Created: 2021-08-17 22:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 1be077cee89fa230cac7c6e13f5aea5f SHA-1: b3424f9c0c966d78cc0279efcfa87c17620e4525 SHA-256: d5e4e6d5862ff1e85b0f2e009af3b4f6766c883eedbe37178e9c8d671e7965d0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many pointing to compromised websites or domains associated with link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of multiple external links suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://wastran.ru/uplcv?utm_term=outdoor+hdtv+antenna+reviews+consumer+reports PDF link annotation
    • http://samsung-service-center.ru/uploads/files/87921978692.pdfIn PDF document text
    • https://ipssecurityconsultants.com/ckfinder/userfiles/files/raponovuvoxoka.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2da9edeea6dd462f0145ebaf51706d72/65193514975.pdfIn PDF document text
    • https://ceral.pl/ceral/pliki/file/92385294488.pdfIn PDF document text
    • https://vokalensemble-vocembalo.ch/userfiles/file/83654421853.pdfIn PDF document text
    • http://shinex-auto.com/userfiles/file/bagijanekirapedulam.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f6994b7cf---xanopepagusatig.pdfIn PDF document text
    • https://farmacieitaliane.com/documenti/file/zirawupojerijusenigele.pdfIn PDF document text
    • http://deccanquest.com/konadnew/userfiles/file/33109575720.pdfIn PDF document text
    • https://taichielite.com/louis/taichi/ckfinder/userfiles/files/25595555827.pdfIn PDF document text
    • http://goreskyreunion.com/clients/b/ba/ba087d28c24afe6c5bc45fa062332e47/File/51632504872.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f929063f14---bokoje.pdfIn PDF document text
    • https://hirurgija.me//files/pafimotatinikitoju.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/7890bafc2330d71b85621668723f3d26/xakawekusux.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/20667852cf11e2f9add5a696471e6d32/rujixajazerapuginabolo.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16070e289c4504---54144893055.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160847d33c28d4---salomuganuguv.pdfIn PDF document text
    • https://davidfoleyinc.com/userfiles/file/51820265314.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/texigojirudulununis.pdfIn PDF document text
    • http://sreema.org/FCKeditor/file/kipamajebitudisozefi.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c72b419afc5---kafijetodejerose.pdfIn PDF document text
    • http://alexhoffordphotography.com/temp/files/file/55113110561.pdfIn PDF document text
    • http://yuanda-boiler.com/d/files/daxulezagik.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/cu8bh28n4rmdh69p7ki4vmrfip/36505611244.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f06c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001087e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1087E 17420 bytes
SHA-256: 803684da41134aa75080d0300dc246c09dc0d0111420cfc5c9527ef852e1dc42
font_02_sfnt_off0001360c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1360C 11008 bytes
SHA-256: ede062169c01f1686e99437df3b34b0558587525f062e17f34790d838c0d24d3

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