Malicious PDF — malware analysis report

Static analysis result for SHA-256 0222acc2548b2874…

MALICIOUS

PDF

93.3 KB Created: 2021-07-08 00:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 254757df7e6a2d9f250d63f89dea8b85 SHA-1: f42775d694d76298b64a78a67c98b40f1cac9f82 SHA-256: 0222acc2548b28747fe9bc25704d0e5e2f79bcaad1a5403c44c4ec21935e3f9b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further payloads. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a malicious document designed to lure users to external, untrusted resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://oniceh.ru/uplcv?utm_term=brown+confirmatory+factor+analysis PDF link annotation
    • https://stallion-international.com/userfiles/file/1596195050.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/a33a2a65bc92591483d293d2fb979064/kasimupibapesudekeka.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16074061ef234a---mefetobotikuf.pdfIn PDF document text
    • http://dralituncer.com/userfiles/file/bewesigatevekusuvo.pdfIn PDF document text
    • http://nfc.soo.jp/file/2476563326.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca1c1c1cb0---67927418661.pdfIn PDF document text
    • https://polandpools.com/contents//files/51390232889.pdfIn PDF document text
    • https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/b86ee35dac59857cf782325731d2923d/tufagarerepuserowar.pdfIn PDF document text
    • http://vivo-mebel.ru/upload/file/kofujewekuzekopawanexik.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/4ubo41db7n4j29lkjuuu3ldqe7/sojidisefozagitupuf.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/bf1f4f9b936d3e05929cce50335b7b33/99457768808.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160bec05a854e8---milupodilolibazulubolovaf.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/60667653759.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/160857de60802b---99139023950.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608a92092aa81---gotanonaxerobirexan.pdfIn PDF document text
    • https://bakwanudang.com/contents//files/88818884333.pdfIn PDF document text
    • http://hebammenglueck.de/ckfinder/userfiles/files/wikufawu.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/ea629cd8dee74a55500f685bfe55b296/11058373686.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/fgk8eokeuo9etlmiuor3102pi0/gibakunolivutonubosategib.pdfIn PDF document text
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160bc96180bcc0---kokejufi.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/bdd49a7a03d874bfd4254d5309c909ee/99266832900.pdfIn PDF document text
    • https://agronlogistics.com/userfiles/files/75612624172.pdfIn PDF document text
    • http://microcement.ua/userfiles/file/56612787279.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_off00010535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10535 10620 bytes
SHA-256: 7660d23bc3c5a80f9a7da7971a3bd9d42d7d11118d818947ca8c062d52876876
font_01_sfnt_off00011d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D96 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000135a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135A8 19032 bytes
SHA-256: 54a970c018de937e1ebb152462f0c2dfd6cc66f2613a8b05a2ec7db285357830

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