Malicious PDF — malware analysis report

Static analysis result for SHA-256 be17de23633213a0…

MALICIOUS

PDF

76.1 KB Created: 2021-06-11 23:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 81aeef69468ac15925ff944d078dc98f SHA-1: 94fe037741b7d473110ed9b6154ac41e4cde1fe5 SHA-256: be17de23633213a081dcd26f5d4529ee3ec28f5698f4e57d7ae80c3fed6dc401
156 Risk Score

Malware Insights

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

This PDF document contains multiple links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a phishing or malware distribution scheme. The presence of a "crack mac" lure in one of the URLs indicates a social engineering attempt to trick users into downloading malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://queure.ru/uplcv?utm_term=aurora+hdr+2019+crack+mac PDF link annotation
    • http://bitite.lv/media/txt/122/file/zavig.pdfIn PDF document text
    • http://allprintusa.com/admin/images/file/51676656121.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a3ce04903---guwolepiter.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/45732644404.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16075aac90da9a---ratesaradimobukosodibavod.pdfIn PDF document text
    • http://vervesimuhub.com/userfiles/file/tumulepegigekozapim.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/288962a8df5bf84c81f3ad6d803a8d5e/2750886694.pdfIn PDF document text
    • https://promise-land.com/upload/file/59634435755.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/4687f66476c775dff2a3ef05ca23dff6/11461675521.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/849c27b500c5affe5d19b6f383f2b73d/fosul.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a53613576---34613725006.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/44071956392.pdfIn PDF document text
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/72c71c7fa6229d1a3f0231e8f420e261/dijobamikugadetog.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc27da41cf---giwuwuzuwu.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/mqj04ku5dt9vc3dumj0te2toh1/61469387792.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE975 5504 bytes
SHA-256: ea2809c6de4a810ff4d0250850da6dd408301967380a8774b2ebd5640e0b4a06
font_01_sfnt_off0000fc08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC08 11216 bytes
SHA-256: 81a483e3362264acfd24a2f7f62adb9d2b6930f0c3ef3c5ae60132a99a4c9e1f

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