Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e4ac11bf1e9d173…

MALICIOUS

PDF

89.0 KB Created: 2021-07-31 20:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: e14d9ca8cec01627e4f23abdd9cb6b4f SHA-1: 97c9269d8e1441637603d219a4e765b0b94c0e7e SHA-256: 7e4ac11bf1e9d173ba404f9cf61a54bd1787c45f1735576b13115ada48da52d0
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a callback phishing scam, as indicated by the 'SE_CALLBACK_LURE' heuristic. It contains numerous links to potentially compromised websites, suggesting an attempt to host malicious content or redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into calling a fraudulent support number.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://infrive.ru/uplcv?utm_term=can+i+apply+for+my+bus+pass+online+in+scotland PDF link annotation
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/7dcc96fafa0c9987d964ccb88404dcc2/20877496443.pdfIn PDF document text
    • https://eltonltd.ru/sites/default/files/uploads/87988724891.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/d297dce39e2679c94881290f0154726a/tiruluzadeni.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160832acddb63a---4128956300.pdfIn PDF document text
    • https://bawaniint.com/ckfinder/userfiles/files/48381907425.pdfIn PDF document text
    • http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087cf678c738---88874544863.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ee339435b3e---senudixatidazaris.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160729262eb8c6---rasilatilunegubavumid.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/6e7ae66fd97a919d633a191fcb32c412/359471585.pdfIn PDF document text
    • https://classconnbio.com/img-jacson/files/xewoxekulibejawuwutuse.pdfIn PDF document text
    • http://www.predia.cz/userfiles/file/zilesakewobog.pdfIn PDF document text
    • http://artpolinakuzina.ru/pict/file/32816103405.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/ios3tj8nemeumtjiedib8ru7hj/bozodiwuvoxome.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b659d93a6b8---63615278355.pdfIn PDF document text
    • http://archissimo.eu/userfiles/files/doderuzegogujoriruxibusi.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c633aff88---6973576504.pdfIn PDF document text
    • https://hssanesteban.cl/files/86220227805.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/4e58047014621a8d65f81bf1f3dd1c9d/sukivalixejopof.pdfIn PDF document text
    • https://faresaldabbous.com/uploads/files/46925471659.pdfIn PDF document text
    • http://upoart.com/ckfinder/userfiles/files/guwororapumogesunibulifog.pdfIn PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/k0ae85hi19du2rcmku0otlt7m0/wemizigela.pdfIn PDF document text
    • http://onmamtour.com/FileData/ckfinder/files/20210629_CDDB73ED0056F6D5.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c713e987779---28307617641.pdfIn PDF document text
    • https://fzclicks.com/demo/files/editor/file/gofowavamo.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_off0000f6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F1 11168 bytes
SHA-256: 2d2426c486898bd645034070808b25b4187aa4d60348258fc8c7aaae8d122eab
font_01_sfnt_off000110dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110DC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000128ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128EE 17120 bytes
SHA-256: 3b962a04064bdfc279264c01c2a05a59f3ce5b0cfdb4ff672204a58d7e3b54a3

Open this report in the interactive analyzer, or submit your own file for analysis.