Malicious PDF — malware analysis report

Static analysis result for SHA-256 7502d00710301d2e…

MALICIOUS

PDF

103.1 KB Created: 2021-07-12 17:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 13528ac77f73b3d58f73f2979c377684 SHA-1: 662e5c22edf473e9c35ea867684649067f7f4183 SHA-256: 7502d00710301d2ea6bd8a9f1c5ab9131fb8d2eefdee1416f4f862a8b252a3cc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV both flagged this PDF as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the nature of the heuristics indicate that this file is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://drafthe.ru/uplcv?utm_term=culture+pom+puppy+price PDF link annotation
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/4e3ba4df9887d7137683ea94dae36a60/81012849732.pdfIn PDF document text
    • https://rajatotogroup1.com/contents//files/14450720265.pdfIn PDF document text
    • http://bean2beenefamilytree.com/clients/60578/File/74124908236.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad0c309ef1---gefapaliwuwitidaredag.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/04mth4463ds0dagcdfdh67po70/95190158896.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a49dfc9c206---judadukedafijizod.pdfIn PDF document text
    • https://myclubowners.com/userfiles/files/80615878791.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607000f5432dd---rukuweru.pdfIn PDF document text
    • https://eviinstall.com/userfiles/files/lewamokipazira.pdfIn PDF document text
    • http://skrabl.pl/www/rpbd/fck/file/44942570461.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090380d59bb1---dumipujuwoninorejud.pdfIn PDF document text
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/44fe343c07a5817755133b516a5c8714/69615103279.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5f4778352---diginebexa.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/1bfff39cba44dd33fe79cc55fc40837a/60483215181.pdfIn PDF document text
    • https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070c91d5fcef---mezofibakirabuzemutageroz.pdfIn PDF document text
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5fa06906b---52070790343.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/80cj2da0vk49hpp5kgmu4ebb6o/jisaxesikezaforomasipijen.pdfIn PDF document text
    • http://jhdljz.com/userfiles/file/1624253585.pdfIn PDF document text
    • https://etonbio.com/newsLetters/images/file/gagujimaxun.pdfIn PDF document text
    • https://anmimar.com/royal/userfiles/file/lujusiturexapokamoro.pdfIn PDF document text
    • https://vieclamxaydung24h.com/upload/files/29803947671.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/1j9122d8cuf035u8ft86g62cu6/76968852173.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_off00013435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13435 16924 bytes
SHA-256: 301a3cdb833b4649b3b2a953a706b8e15f109126104a19d156522acc1ad1ef86
font_01_sfnt_off00015ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FFA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00017811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17811 10348 bytes
SHA-256: 1a1c845df7150773edb21a5fc72a09308eac9bed9cbd7da21ffa1029ccd44257

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