Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d19e11696a51c2…

MALICIOUS

PDF

85.6 KB Created: 2021-07-18 08:12:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 0ca0443c329a0bef11ef5305c0a6d858 SHA-1: 5a33c868855d2d86088f25cab11b4ded32c77791 SHA-256: 69d19e11696a51c243321122b465d54d09f0123844b004490c903cb4e817dc5a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The document contains numerous links, many pointing to compromised WordPress upload directories, suggesting it functions as a link farm. These links likely serve to redirect users to phishing sites or download further malicious payloads.

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 http://palyavalaszto.hu/teszt/upload/file/nofididobekirudawid.pdf In PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608127d2ec909---95050888140.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/aufhe3g1mf78m4gvlmlhqi5eg4/69697445039.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/0jaca4nhdc4umf964q3hdboh8g/48690943086.pdfIn PDF document text
    • http://tubietelbar.hu/uploadfile/15734330467.pdfIn PDF document text
    • https://heritagecambodiatravel.com/userfiles/file/kozupukeguxidug.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/d23d40615e6287a9c094ea9682170f38/95079151400.pdfIn PDF document text
    • http://glotecgh.com/upload/editor/file/koduvukisezofemigixeb.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/genitezetubeweto.pdfIn PDF document text
    • https://jdrum-music.com/uploads/ckfiles/files/55617995994.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607126d100a4f---fepor.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b968eb98950---winobaxipinizevix.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073989ae4298---91224071001.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b7320c0ff12---vawasuzuvuv.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d37773b0e1a---zibeboverexazepiziwej.pdfIn PDF document text
    • http://kaizenlife.com/ckfinder/userfiles/files/40774562270.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/35760920943.pdfIn PDF document text
    • http://amblesidewindermere.ca/fckuploads/images/file/xawidizanatebinuk.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/3e7d1ff614588acb936ec0c42eebc8be/taguzovezux.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/3fcca94668b55d1c0bebf424974db36f/78227344255.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/a37dd54f29d100bfb53459af54b19cda/4910629451.pdfIn PDF document text
    • https://rendiamovisibiliglinvisibili.org/file/48447303584.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160867f064d56a---28098150710.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/16f9f6df1750a949378fbca9ed590af0/13306788748.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=peach+cobbler+with+biscuit+toppingPDF 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_off0000ecb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB1 16588 bytes
SHA-256: 018d9ccaa890c4471d08e6d207cdc2c0da1f5a46dda0508eec79666609c269ec
font_01_sfnt_off000117b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117B9 10980 bytes
SHA-256: 807bf810298c53a0d494fbca1db73af51f411e04ace8c9a5133db78a870f5431
font_02_sfnt_off00013105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13105 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1