Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ddd24a5c1e0ff09…

MALICIOUS

PDF

80.9 KB Created: 2021-07-16 09:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 107442021cade7371be21e89b0575c35 SHA-1: f0afa1a8b7e53c0bb1a3de9d978154ecf1fec78f SHA-256: 6ddd24a5c1e0ff0919baa5f0d372e67d3b56dbc02861ab6a49b1dc0b477b734c
164 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of multiple external URIs and a 'download button' lure further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ewdel.cz/ckfinder/userfiles/files/robolome.pdf In PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f85ab93756---pigiboxezikibodabovokif.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ba8b0a80ac4---91423961809.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/18cdb51e93efcd59235ff6f8d5afb928/jovuxuxarelenetezozosuz.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/49480287616.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609463cfbf0d6---kibadowoforum.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/bfa0eb18bd2ec9a3a213f17ab5f5bfc5/xinegugafutot.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/urj8lvmrc96okdgb309ifq31ba/59089253827.pdfIn PDF document text
    • https://psfund.org/public/uploads/files/cms_files/82221989715.pdfIn PDF document text
    • http://gioiacompany.net/images/upload/file/jesibibo.pdfIn PDF document text
    • https://homeuu.biz/upload/ckeditor/pages//files/fadeligumiwevobidejogid.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5b0ebfaba---naporofalisufuwofeso.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/42b614042dc8b2b8b0b9ce80bbd32b56/68635194017.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/569d6917653c074f8f577788c0dbdcd3/vamuvu.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160964c4b92f32---tejifozifixedunijezibez.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/25def54f9ad72b05b7a8825c880d28ae/norizurape.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/berako.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/f7fdtia8mp7als826m6vb1djd9/bisitetumivogevuraro.pdfIn PDF document text
    • https://webmenuplus.com/images/file/9005506905.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088244e88151---41703472906.pdfIn PDF document text
    • https://netshopnepal.com/userfiles/file/72038923063.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16077ad4169dca---bilivadupusavamutozew.pdfIn PDF document text
    • http://shipagents.nl/uploadfiles/file/97154570337.pdfIn PDF document text
    • http://msslink.ru/userfiles/files/rexebolev.pdfIn PDF document text
    • http://carszana.com/image/upload/File/78763244749.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1607671b8abbd6---31451876373.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=answers+to+free+flowPDF 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_off0000db44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB44 10020 bytes
SHA-256: 52171f0d744b55829275567305d03c9372eba44378bbed1940345b69a662fd5b
font_01_sfnt_off0000f1c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000109d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D9 17108 bytes
SHA-256: 747acddd40dda1da1708e32bc01f493ebb323db4badc6f40c1294a44597f9f8b

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