Malicious PDF — malware analysis report

Static analysis result for SHA-256 7292e7c83c1256b8…

MALICIOUS

PDF

90.6 KB Created: 2021-09-01 05:29:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 10b1d5d46d987667881b7e220730b49e SHA-1: f8fc3258fc1355c13f3ddf0fc062ed70caa8f4db SHA-256: 7292e7c83c1256b83cf5162ec67e6e215e413022f13a05a658509d8aae9c4cc0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites and are structured as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery through these links. While no scripts were explicitly extracted, the PDF structure and URL analysis suggest it's designed to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9fccd93d18e9126c8c657a10af3a7b3c/rexate.pdf In PDF document text
    • http://hb1004.com/userData/board/file/7925354169.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077d5501cbd3---datilaninofarojo.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16071dd4251fcf---95394249593.pdfIn PDF document text
    • http://www.chatanakonci.cz/userfiles/file/28105073282.pdfIn PDF document text
    • http://alexandercdg.com/clients/36029/File/79397440900.pdfIn PDF document text
    • http://everest-c.ru/ckfinder/userfiles/files/mafodozobi.pdfIn PDF document text
    • https://codecs.roimages/file/87996201080.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/92079753201.pdfIn PDF document text
    • https://dm288.rs/slicice/file/15499680184.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160980096501a4---xavipixavaje.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/fivikepitukili.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075517203b82---25280135711.pdfIn PDF document text
    • http://ekotop.eu/userfiles/file/vukojeravekupido.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/dewufamepataxofebaga.pdfIn PDF document text
    • http://studiotecnicolari.it/userfiles/files/39597544344.pdfIn PDF document text
    • https://plasy.com/uploads/file/12322730823.pdfIn PDF document text
    • http://hanhthien.net/uploads/file/88397128360.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/161183131bfdc5---70951389229.pdfIn PDF document text
    • https://eobliecky.sk/userfiles/file/wiwupup.pdfIn PDF document text
    • http://www.papelerialapiceros.es/ckfinder/userfiles/files/venusilemi.pdfIn PDF document text
    • http://architettomontanino.eu/userfiles/files/3859058465.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4cd22682d---25389830751.pdfIn PDF document text
    • http://ediliziaunoaventi.com/userfiles/files/ralilepuzoxavosunubi.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/1ba23035659c680d33580c3dce96ec4d/vefibaraduxibamo.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160823c0fc6f0f---budosesitixibijovidigu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=rolling+girl+vocaloidPDF 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_off0000f6a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A5 10256 bytes
SHA-256: 76d9701dc828fcb10e81b147c12b93cd888bc57b8e9e6172d725fb3a024e9b97
font_01_sfnt_off00010d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D93 21388 bytes
SHA-256: f3b67177014c83ee31d3dbb971086120e6a3df2fa94a39e7f18e3da5bd4fc85d
font_02_sfnt_off000145c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145C3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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