Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65da412187f36d6…

MALICIOUS

PDF

74.0 KB Created: 2021-06-28 01:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: fbac51dc449e9b1a46f148abc8bca894 SHA-1: f39cc71bf79fe162051ae6cc0e8c9c4ccd1882c3 SHA-256: d65da412187f36d6277b8a41d31d6cf08e7b5031d0b48d6cbecb1a9c77f86fe7
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous links pointing to compromised websites and disposable hosting, suggesting it functions as a link farm for phishing or malware distribution. The presence of external URIs and compromised CMS upload links indicates a pattern of directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://philabc.ru/uplcv?utm_term=lunch+foods+easy PDF link annotation
    • http://vieclamketoan365.com/upload/files/87744939751.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/68006089480.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/490272b8495ae4ff71ded1a2bda3f33c/7512313059.pdfIn PDF document text
    • http://aihyang.com/userfiles/file/kemogumurogobaloxuf.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160987164b490c---93202988424.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/39035181480.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a24591032ef---90494518930.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/6547388343.pdfIn PDF document text
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075100c36e5e---31602593671.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/3f36f2b2cb1d6e864715760955b5b28b/78398616488.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/plqvrd9l9dfgq9dask3d4jge33/navuzuwuro.pdfIn PDF document text
    • https://carparts-fixture.com/file/file/94081647630.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/907fa4890ee6376dbcd8b69ab9c0024c/48085481259.pdfIn PDF document text
    • https://ascinfratech.com/clientprojects/trading/file/zabofu.pdfIn PDF document text
    • https://roweryelectra.pl/app/webroot/uploads/file/16238312541241.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a30f1c11e1a---dawuwovibomajinibivozotuv.pdfIn PDF document text
    • http://xn--49s538bo8ux8c.net/userfiles/file/56411323865.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160824d6ba46cd---jazivulumupa.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/i0sg8km4jktf7da8gro6qunqtp/69704665462.pdfIn PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/48e9d26b5a397e2ba9df755261a36067/nubevalogirexawum.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.com/userfiles/file/29335245653.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f542dac4b---56467767063.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/185e318ffd55d28e61cabe0e3d92d22e/rezuxepeweze.pdfIn PDF document text
    • http://daoltrading.com/userData/board/file/49293521343.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_off0000c202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC202 15980 bytes
SHA-256: 9d3ba8e311cd726d114754435d0fcb2cbdc99eea03c02d554b4ede16bbb805ab
font_01_sfnt_off0000eb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB33 10408 bytes
SHA-256: 4795fb209abda7319af5ed59d44051be59517c7a78fc526db5ed01786a384dde
font_02_sfnt_off000102c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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