Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e25fe7c7780710a…

MALICIOUS

PDF

87.4 KB Created: 2021-06-27 21:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b136895db4e7b1b7c00ee38b1d4ec3af SHA-1: 58a32d22966dae3967d96b49d42b49c41c914194 SHA-256: 0e25fe7c7780710aa54e29348745fa2e67171692b41e97b2f2e8aa0efc132be8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to compromised WordPress sites, suggesting it is part of a phishing campaign designed to trick users into downloading malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of embedded URLs and the nature of the heuristics point towards a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://smidgel.ru/uplcv?utm_term=recover+deleted+pdf PDF link annotation
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a811429eeb7---wamovu.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/7mj9vu7bisbapvu1tutm4gc463/45460237499.pdfIn PDF document text
    • https://ayurvedaemart.com/uploads/file/82780427206.pdfIn PDF document text
    • http://ilovehikari.com/uploads/files/nufoladinepotum.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/a8c7d246f70538b6bca51654d65dd172/73390547604.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/jd2doaj6mlseeh7dpg0ru5s757/newaderag.pdfIn PDF document text
    • https://boucherienabli.com/uploads/FCK_files/file/javakosexexabasadinadipun.pdfIn PDF document text
    • https://sca-kc.net/scauserfiles/files/44887996161.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdbad7330d6---dogefexatuwobujimopujari.pdfIn PDF document text
    • https://binarbaid.com/public_html/userfiles/file/romiburebonosavax.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0e5caabb2b---44624919132.pdfIn PDF document text
    • http://adria-ex.com/images/blog//file/fokomepawerufufid.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160be5d0d4d94c---74713814436.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ae757a14e8b---58064233467.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b51aabb0f84---86805666233.pdfIn PDF document text
    • http://ikhmongol.mn/ckfinder/userfiles/files/turak.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/10820963913.pdfIn PDF document text
    • http://inspiredindianfoundation.org/uploads/45263284333.pdfIn PDF document text
    • http://barcabianca.eu/upload/file/48639483830.pdfIn PDF document text
    • http://scales-center.com/shop/fck_file/file/nufuxesorakakafobiwinuno.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af991e9fe24---35919987638.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160723c4a7e6be---forafaweluluf.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_off0000f3b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B1 10196 bytes
SHA-256: 508824d74f14ce9c94974565f888e2bcee90b5234ecce79d7d9072ddb8d7d0e1
font_01_sfnt_off00010aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000122c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122C1 17496 bytes
SHA-256: bae40ae88f85e71e1ac4442bdf156a275a51f824ffabad72a6fe4bf8d74ac232

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