Malicious PDF — malware analysis report

Static analysis result for SHA-256 e41776439e58a3fc…

MALICIOUS

PDF

99.6 KB Created: 2021-08-14 01:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 9c47bd98a8c6b0593b6cb899b4f011fd SHA-1: 95fb828f8748e0ff426149f77eb9db3ae74c3c67 SHA-256: e41776439e58a3fc5e39882136d48be294aebac7f370204e196a744ffa399acb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous external links, many hosted on compromised or disposable domains, suggesting a link farm used for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to lure users to external, potentially harmful, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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://ivanda-commerce.hr/userfiles/file/zasapabiwomomov.pdf In PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/20df4f734183c1bf610c42b89c11ee8e/8323340080.pdfIn PDF document text
    • http://glotecgh.com/upload/editor/file/xutavi.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a87595ecf8b---49288431639.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/n32j5bamebcldcskgp6rn7ovio/20811330859.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/dtu3ctuu2resmeouvmcjcgfrf6/48786976012.pdfIn PDF document text
    • http://aroma-es.site/yamituki-n/uploads/files/64002129197.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/6532132c5f100db143fa6a1bcefa52dd/94759672667.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608315add1c6e---midezulunanelusopivaku.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/a9m8in24951g68p4dqmgh5r8op/14881926749.pdfIn PDF document text
    • https://vestol.bg/files/file/68188661782.pdfIn PDF document text
    • http://form4concrete.ru/pics/cont//file/33264260914.pdfIn PDF document text
    • https://itracmediav5.com/ckfinder/userfiles/files/11040506755.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/6d65cc1e504df7eec081d17fd2d5a910/vexaledomoponobisujigige.pdfIn PDF document text
    • http://architettoangeli.it/userfiles/files/70947877735.pdfIn PDF document text
    • http://lbhs1965.com/clients/6/6b/6bdd8f708684a1f547efbf97e1630fe5/File/tumiliwotired.pdfIn PDF document text
    • http://patroha.hu/file/biserirojupekawoxutosisa.pdfIn PDF document text
    • https://equator-maritime.com/userfiles/file/murinijelotufikulivotipi.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4508e6f3a---gibefejapimufa.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/349b18273e87cad3d691ce89c04107c1/folinutapu.pdfIn PDF document text
    • https://www.tvmreza.tv/ckfinder/userfiles/files/morabo.pdfIn PDF document text
    • http://homeopathyhongkong.org/files/30748850436.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/2d0aacbb02104719a8c6b44591a3e398/sovexopukoduvuwesuvikamiz.pdfIn PDF document text
    • http://xn----gtbercbfedtm3b.xn--p1ai/admin/ckfinder/userfiles/files/sijedadijer.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=r%C3%A9sum%C3%A9+chapitre+8+le+royaume+de+kensuk%C3%A9PDF link annotation
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001058c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1058C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9E 18900 bytes
SHA-256: 6cb0bc84e70a37b3df7aad6bac73ff6a190590df6b58221349752d6f8687dd9f
font_02_sfnt_off00014cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CFD 11492 bytes
SHA-256: 7a6b4b545a08aeaa4075d8b3cfa762735b0dd1af19f9fa27d7c94e1ffcf58968
font_03_sfnt_off000167bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167BF 16248 bytes
SHA-256: dbb02677f448f4c983d79d6565ccf3da8455bd80a770fb208885979633a31594

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