Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0ae9a9703a4e50f…

MALICIOUS

PDF

87.6 KB Created: 2021-08-19 09:23:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 624ecd1f4f1ab3af085d70fdf8a2b5f6 SHA-1: b9f345aef53cdcd909c157c7a070de6b2faa777e SHA-256: f0ae9a9703a4e50f909f6344e304450b798adbe0295c9af07485d27476c3f914
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous links, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://krisoc.ru/uplcv?utm_term=internet+o+filme+online+completo PDF link annotation
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608604d043126---4982831854.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/cc09a0870dc736c05437ab85c3e82869/nilaxavuwi.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160856bad92fa8---88564776024.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa68bd9da5---733258398.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/687622823782a2c781895ea45a14f56a/rizelenet.pdfIn PDF document text
    • http://gianniarnaudo.com/userfiles/files/13356557677.pdfIn PDF document text
    • http://4bx.pl/public/file/63306282398.pdfIn PDF document text
    • http://birnagarcollege.in/userfiles/file/dibafilebirigivute.pdfIn PDF document text
    • http://soles2walk.cz/data/file/voxokabalaputolomomo.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8bef76b4a---55588304060.pdfIn PDF document text
    • http://ecohouse-lab.com/userfiles/file/25926923954.pdfIn PDF document text
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16083fb1917d0d---65162636977.pdfIn PDF document text
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/9343014a406706187f18682317ece1c3/wamobobudivuwe.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/fdb790445563a19de51760d364c901bd/xunef.pdfIn PDF document text
    • http://akbarestate.com/survey/userfiles/files/797547964.pdfIn PDF document text
    • http://suacona.com/clients/16856/File/jogawakejinuvavajabeziw.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/zovovezutip.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609edf606906a---ganedo.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/90447bc423ec677b6719a62ef8bcdd25/wisaluzozom.pdfIn PDF document text
    • https://ezgoe.com/10005001208290177/ckfinder/userfiles/files/kibawamexipekeliwozusipe.pdfIn PDF document text
    • https://namhunglogistic.vn/site/files/xudar.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/74eee0ecd06bb1e05497dbe091633676/zilipamumez.pdfIn PDF document text
    • http://gesundheit-im-blog.de/userfiles/file/lakagaxeg.pdfIn PDF document text
    • http://hzbmsj.net/images/upload/File/56424433080.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_off0000ef81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF81 19192 bytes
SHA-256: 0f1e5cc3b2ad503f149c6f5a2223f13a162eb068a14d5a316c912fafdba0b2bc
font_01_sfnt_off00011f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F2E 10264 bytes
SHA-256: b379894a14b833b7c0e587f65595f0f73d30a390d4ecd0d51a08b097427acd10
font_02_sfnt_off00013631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13631 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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