Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0007efa4e4211fa…

MALICIOUS

PDF

85.1 KB Created: 2021-06-07 01:07:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ba22d1c7936977a662439d13fac86e22 SHA-1: 8e5383578cba5c9732f91eb9fd5a6335c0d97bd9 SHA-256: f0007efa4e4211fa7f3b3c4771d9a283ca1199380f78dbe9bdd520dd53bbee2d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to distribute malware or lead users to phishing sites. The presence of the 'utm_term' parameter in one URL indicates a potential phishing lure for game downloads. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://medvor.ru/uplcv?utm_term=download+game+efootball+pes+2020+mod+apk+offline PDF link annotation
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8af57c8e25---65923363254.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/89330729972.pdfIn PDF document text
    • https://oklogistic.lv/upload/file/boraguwe.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a50fa6b75e8---lubotagonofuwo.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/7f49a9d0847d3aa467b45dd798aeff15/20367912707.pdfIn PDF document text
    • http://ipceurope.eu/assets/file/geborokozorapojifoziso.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/1jqjjsngqo3dft7trq6t9tmjij/zugulukugefunekogef.pdfIn PDF document text
    • http://bensonlandscape.com/editorData/file/widubugidukum.pdfIn PDF document text
    • http://aclamerica.com/customers/CMS-IMAGES/file/dotesefipovudu.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/6d22e6f4fd603d017f49cc05ce48050c/lufuwabelupesofixaloze.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2d153d7e0---zamibomupenoromujekawo.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/74fcf4c8099517cf3f44a9fff72a1aab/53507418827.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609e3330512eb---88686753102.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160ac508eb26e6---90190808798.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/928290612.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16079677a84619---jovorukono.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4571c13596---warenunoniro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE72 4324 bytes
SHA-256: ba178390a2db1a8fdf4dac98a857c11a04a72ccfa22cf92d339c1f1d50f91a26
font_01_sfnt_off0000edda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDA 5832 bytes
SHA-256: 54ba342f6187836c56ebfff8ecfc4a041979196b4dc16a6cbc18ce50aaf6e297
font_02_sfnt_off000101c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C6 17436 bytes
SHA-256: d03b30b3439ec7871a6408fdc68b70edac87f727898ad3f60da4af13af719ab4
font_03_sfnt_off00012ef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EF2 16732 bytes
SHA-256: e19d11f168ec526b04c921d5a6710690e36d4bec156745670a7c9a540dff7ead

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