Malicious PDF — malware analysis report

Static analysis result for SHA-256 369c0360334c507c…

MALICIOUS

PDF

81.6 KB Created: 2021-08-12 00:27:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 3e6d6f2a442f1da694c37ff15a8df2c1 SHA-1: 3f7e3510bc3ebb3fd7d66d2840b4ccf94f13a7fd SHA-256: 369c0360334c507c4ef7ae0e965efd7a3ca1a17953ca6351c5949a3d762bf08e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites. These URLs are likely intended to lure users to malicious content or phishing pages. The ML classifier strongly indicated maliciousness, and the presence of link farms on compromised CMS platforms suggests a deliberate attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 5

  • 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 http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/8e76a20aaff0f68b1e491c7e25bd1bc6/94513229781.pdf In PDF document text
    • http://cathugo-catamarans.de/res/wysiwyg/file/13673330029.pdfIn PDF document text
    • http://ghgunclub.com/clients/f/f3/f3036db30fa8ed97f94f648fc77c1040/File/98538896729.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160894ebf9d6bb---3827691079.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/ead6d991f364f247b8893a09128b9dbd/41032330681.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606edbe7e4728---15376925240.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160897bc2cc997---wuzapavajetazafapij.pdfIn PDF document text
    • http://abwcoliseum.com/uploads/files/fupifeveboxotudu.pdfIn PDF document text
    • http://fratellilongoni.com/userfiles/files/bexenelilod.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/p1ur42j4obt8a58vnspkgt3q0n/milogivizeti.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160911bb705f61---9003921753.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/feboda.pdfIn PDF document text
    • http://www.optimizecost.com/admin/ficheros_fckedit_subidos/bererawimijumewagolig.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a737013be63---vulixuxovejiratijuxovig.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a0b52920d58---pifilatutenenilewelil.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c01c66a30bb---zalavake.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/nulotobefozatupanimu.pdfIn PDF document text
    • https://avgdesign.com/userfiles/file/wonokom.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc255a9cb1---44841322594.pdfIn PDF document text
    • http://etkindenetim.com/resimler/files/17270736793.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/baa9aefdea447f74d38aacce79f718f6/pejokiluwofabefubax.pdfIn PDF document text
    • https://cplastik.cz/data/cms/file/78495602059.pdfIn PDF document text
    • https://ta-taiwan.com/app/webroot/userfiles/files/rolodanirugeruvenasijulof.pdfIn PDF document text
    • http://akwarella.pl/user_uploads/file/10615715947.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bcfc059d068---25426413419.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=descargar+alldata+2017+full+espa%C3%B1ol+gratisPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD664 17136 bytes
SHA-256: 5bcf8150901d95be2f0c11b235d67115052b40be08995e4f11bac09b97fb1a79
font_01_sfnt_off00010225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10225 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A3C 11344 bytes
SHA-256: 4b5a3883e66130757a6a27fce001f519dc7c04a472de0ee9cf01b89e862d534d

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