Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ede4f01dd7cc582…

MALICIOUS

PDF

101.7 KB Created: 2021-06-19 02:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0da23d7c8bd9ddfe43e9af6454a38bfb SHA-1: 463905d481d752f019b149a8bc7a9649b42689a9 SHA-256: 8ede4f01dd7cc5828e50da532ef461b55f986959156559918b0361b1554b7707
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://ketchas.ru/uplcv?utm_term=arjun+reddy+full+movie+download+hd+1080p+movierulz PDF link annotation
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//suzeruvunenin.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/e5d495b012b55f1b0fd1bc492a214c10/8585449683.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607970cf46277---werisosemomaroketerekad.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085b00a86b01---riwutaxapuzer.pdfIn PDF document text
    • http://ausafe.net/images/art/files/10769242591.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/31bbd9ab15b248e0d1bd9c9dde6efad0/25075324874.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16095b9cd26c23---82490355405.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16077d8493379e---rojevosonafapupofi.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/10677702947.pdfIn PDF document text
    • https://irantruck.ir/data/file/xusopikojojusakir.pdfIn PDF document text
    • http://tea-ra.com/user_data/upload/save_image/files/97712999872.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/natineletafeze.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/16094811d3a3e7---zusulovarodimuxoka.pdfIn PDF document text
    • http://copingconversations.com/userfiles/file/18336638712.pdfIn PDF document text
    • http://project-lovcen.me/userfiles/file/20140481853.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/vanuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED5 5860 bytes
SHA-256: c2e9abd547e3f969eeb10c23720c55a06c0dceac0251cc7fce0773d8d6310f6a
font_01_sfnt_off000122c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122C7 6252 bytes
SHA-256: 8eb77ba61dedccfb1400890d3eae96eafa5bf0b78c1ea744d33494ceeadf1b70
font_02_sfnt_off000136e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136E0 12752 bytes
SHA-256: be9bf6ddd323bd7f6fc2aec2f6997c2bb0043b7c278e04f31131f7c23964b435
font_03_sfnt_off000160e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160E9 16036 bytes
SHA-256: 149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1
font_04_sfnt_off0001758d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1758D 4616 bytes
SHA-256: 0e74f167bd9eb77f8e39d49bad80be48d2ee981b1ad74ecec738eef6e1b030e7

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