Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7e2329d6094cb1d…

MALICIOUS

PDF

83.0 KB Created: 2021-09-04 04:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: bd95ed00d45957220fb01cf3f32c1c63 SHA-1: dafeb986e85945f26fe10b0f7e0c8710871c7e3a SHA-256: a7e2329d6094cb1de4a68d9334f29e7ce044dfeb4897d9a201522a727ec0d409
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan by ClamAV. The document contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly indicate an attempt to deliver a malicious payload or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://infrive.ru/uplcv?utm_term=receitas+para+panela+de+press%C3%A3o+el%C3%A9trica+philips+walita+pdf PDF link annotation
    • http://ecosdaliberdade.com/ckfinder/userfiles/files/10136148930.pdfIn PDF document text
    • https://uniqrelation.com/userfiles/file/36407600777.pdfIn PDF document text
    • https://senesi-sklad.cz/userfiles/file/3472770998.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/e47d420c24e93c401ae6715365571fba/ranedowej.pdfIn PDF document text
    • https://stdtekstil.com/upload/ckfinder/files/jabazoputi.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16086cbe8bd4b7---20768784096.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16098aa58bcbe2---66221235535.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/ikg1lmburlj0893q9elkinhve4/genafosujigawi.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608117f32f410---roxipatigirofivupu.pdfIn PDF document text
    • http://studioarchperissinotto.eu/userfiles/files/68684284244.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607f08aa88f48---96004919243.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/1ac0ee0a6172e778892e6a5041e01cbc/rewisazed.pdfIn PDF document text
    • https://fishboat.hr/files/lexegofabi.pdfIn PDF document text
    • http://c2r-auto.com/uploadfiles/file/2021071322515373499.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/850f28ee958a656d1e784a7a65f13e3b/14832674932.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/1cbc4c601159b92b6a3c8a5cc9dd1af6/85884915862.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20210521064359916.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16081a98322fbe---75816554954.pdfIn PDF document text
    • http://szolnokepul.hu/userfiles/file/84764753609.pdfIn PDF document text
    • https://luatsuavina.com/userfiles/file/71479365440.pdfIn PDF document text
    • http://camionespanamericana.com/userfiles/file/wakuwofegeluvodokov.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e60e6f2c9ca---fimitir.pdfIn PDF document text
    • http://master-vin.ru/files/file/62955412016.pdfIn PDF document text
    • http://digivideos.net/ckfinder/userfiles/files/fedunu.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_off0000d74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ef61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF61 20016 bytes
SHA-256: 548a49a76cb9a2e1e273adbd0656d0e695fdbd281fbea9c27ad99743f6dd664d
font_02_sfnt_off0001214d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1214D 11268 bytes
SHA-256: 8a151e9f11851a65b7540b2a9a6750ef7f03b8687c0db584d40d0cc631703cad

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