Malicious PDF — malware analysis report

Static analysis result for SHA-256 6694f77d3f7b6f02…

MALICIOUS

PDF

83.4 KB Created: 2021-09-23 18:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 92bf98e6f491545661f3856b839de570 SHA-1: a544d9935f53b68eaa64fa748e5bad8bf04e6ba6 SHA-256: 6694f77d3f7b6f02bffa3512437e833e02b83c67df2f0cf26606b8b64add9b2d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous links pointing to compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of embedded JS and external links suggests the document is designed to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b9c6fb5653---durotuzali.pdf In PDF document text
    • http://k-ookuma.com/js/upload/files/71761328151.pdfIn PDF document text
    • http://alompar.hu/uploads/content_files/files/senagowulirirubu.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/cff083db70f4d049e299d3e30af7c4df/56532813280.pdfIn PDF document text
    • http://dietetyka-24.pl/images/files/7324331790.pdfIn PDF document text
    • https://nguoixunghekiev.vn/userfiles/file/logoruwabokuxu.pdfIn PDF document text
    • http://hkalc.com/userfiles/45615118131.pdfIn PDF document text
    • https://casasholidays.com/scgtest/team-explore/uploads/files/10203981405.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161417e163b1ac---zuzegosirogupubor.pdfIn PDF document text
    • https://dongciao.com/uploads/files/202109121959594385.pdfIn PDF document text
    • https://jeevandeepspecialcare.com/ckeditor/ckfinder/userfiles/files/gokanezijirowagop.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16137d4f689179---22408263526.pdfIn PDF document text
    • http://woodlandhills.ilovepokebar.com/uploads/files/5584216109.pdfIn PDF document text
    • https://www.truck-transport.com/ckfinder/userfiles/files/89669114848.pdfIn PDF document text
    • https://anukulagrotech.com/ci/userfiles/files/18733629797.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/161320cd435ba1---novijozubekewenemewitewaw.pdfIn PDF document text
    • http://infinivideo.hu/sites/infinivideo/files/bezosifom.pdfIn PDF document text
    • http://bitree.net/ckfinder/userfiles/files/60385280365.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613780a430c68---loduwozagobisowimekifefi.pdfIn PDF document text
    • http://spbi.cz/res/file/34315201114.pdfIn PDF document text
    • http://apothepharma.com/upload/files/44949256074.pdfIn PDF document text
    • http://maraulsan.com/ckfinder/userfiles/files/67359867237.pdfIn PDF document text
    • http://motolargo.pl/userfiles/file/roralodutasi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=aimbot+apk+ffPDF 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_off0000dbad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAD 10184 bytes
SHA-256: e595b4fb8e71e540d274142df2d05fffae1dac9c5af7cbbffc9104267f9573e6
font_01_sfnt_off0000f24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010a5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A5D 20916 bytes
SHA-256: 0f6d6a8f619e3e0eb1208f3a69e574ac738990919f5aef379e8d04bf8d96788b

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