Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eda980017d88d4d…

MALICIOUS

PDF

83.2 KB Created: 2021-07-04 05:11:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 2c662a32ca75e4dab3bebbc7d2b34da2 SHA-1: 88eb0e6579e94e713311922859f4c90e6f8f00ff SHA-256: 1eda980017d88d4d91957d5073c72b91fe8c53b20ee4e4afa6ce932a489eac23
124 Risk Score

Malware Insights

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

The PDF sample was detected as malicious by ClamAV, specifically as Pdf.Phishing.Trojan. It functions as a link farm, containing numerous external URIs pointing to compromised WordPress uploads and disposable domains. These links are likely intended to lure users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4364

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://oniceh.ru/uplcv?utm_term=protocols+and+port+numbers+pdf PDF link annotation
    • http://apluskleaning.com/admin/images/file/rotijotanuvegeru.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/38689b008ad4e3b39187776d8dfc8d04/36465041463.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/9867713cf2acbc642853f6ec028db31d/mafiwalerudibiju.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.com/userfiles/file/vakibidodedukuxusewavube.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/g5fgpg2c3hglh73mpr8k4oovd6/banosabegaxemogifogojomex.pdfIn PDF document text
    • http://oresteruggiero.com/userfiles/files/37667382244.pdfIn PDF document text
    • http://suacona.com/clients/16856/File/34851118651.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4a1f19d18d---ketijosidiniwe.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd045e4654a---3768428696.pdfIn PDF document text
    • http://beming.com/ressource/site-image/files/46471138378.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/gc234pulmcbnsa62iekfaco0af/bukuwoletinijigojatewere.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add39d80aca---zagoxugodubuwamejaveras.pdfIn PDF document text
    • http://paynechapelduquesne.org/clients/9/9b/9b910c66cef3ae2d1bb1fd5804160a19/File/kirudimudezorokulot.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/muvowikijimapijoj.pdfIn PDF document text
    • http://ourjamesfamilyhistory.com/clients/1/14/146a9f92d0a296c7c29e793db058bb30/File/xorunijebejimifoxazo.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607307b44de61---73380424568.pdfIn PDF document text
    • https://oklogistic.lv/upload/file/4521247635.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160947d36c8589---44479571183.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/c1cbb4c7fe5f618e382da683f7896eda/suvisuwigoba.pdfIn PDF document text
    • http://ixtvs.de/_upload_bilder/_filemanager/file/belodikeb.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608d4adc79fbb---xotewag.pdfIn PDF document text
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/29e2e4e76f9ebb0e9bb1bab26cc4f7bf/44343982122.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/c323838929b0a4d4a48a1b7564926539/36106659641.pdfIn PDF document text
    • https://caribemed.com/userfiles/file/dugaxer.pdfIn 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_off0000f02b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02B 17052 bytes
SHA-256: a5570c99ebf269f8bbba10666eda39b36a5105911f943022285a0e231f6500fd
font_01_sfnt_off00011ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CE5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000134fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134FC 10932 bytes
SHA-256: 5497e6d47d1f76b6d708cbedabefec294ca5f6196f5187eccce126d0d8caeaea