Malicious PDF — malware analysis report

Static analysis result for SHA-256 bae217c62fdeacf6…

MALICIOUS

PDF

84.7 KB Created: 2021-09-05 13:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 13d445a7acc281f2e56944bbbdb6952d SHA-1: 00c19b6eff7651e5e5d05af0dfcb3b3d5404e3a7 SHA-256: bae217c62fdeacf6a25403b4c92e91e8f51a83c615a0598eb2137c4a2e49917d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://nomylo.ru/uplcv?utm_term=pc+psychology+questions+and+answers+pdf PDF link annotation
    • http://wmc21.com/ckupload/files/76868136476.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f09c002060---kevuperu.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/5c82c3043775b23c3168b4a66a2a22c8/26702640718.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610ae5ac8168e---jijujumivufunu.pdfIn PDF document text
    • https://gregor-biffiger.ch/userfiles/file/vorukiburufewu.pdfIn PDF document text
    • http://bayanairag.com/uploads/userfiles/files/fitawam.pdfIn PDF document text
    • https://jjcfurnituremaker.com/userfiles/files/gizamuvumaxuwelu.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/dixipa.pdfIn PDF document text
    • http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/gekorigozowatubuwag.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/29476817382.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16085e1206071d---15183020609.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16126dded088d6---87909468634.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160843df115556---bumatenezuzogufuk.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607434f5bbaec---zikis.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/b2ffdcba75642f0e22d2d69c529f0e8e/77501325223.pdfIn PDF document text
    • http://goteneplast.se/files/images/file/rezilinafap.pdfIn PDF document text
    • https://btegypt.com/file/goluzejibiwamo.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/guwumepovam.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/nesunugesokatepokobak.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609f281ba2081---75880121476.pdfIn PDF document text
    • http://qzgj.cn/upload/file/18231285712.pdfIn PDF document text
    • http://cnmrobotics.com/files/files/felinuzabafopa.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc25e28c89---sefutinuw.pdfIn PDF document text
    • http://kmbb.at/userfiles/file/58205229007.pdfIn PDF document text
    • http://mateuszkucharski.pl/admin/file/jupadizinugavuzez.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a39dfbabd5f---20020132689.pdfIn PDF document text
    • http://lukinserv.hu/file/momatukexuligogaw.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_off0000de3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF651 19944 bytes
SHA-256: 773b826c6d5c4594c1caf28c6fd5d8220cc4eb67f988659b503c958508e9f2fe
font_02_sfnt_off00012a23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A23 11348 bytes
SHA-256: 9506b2b482d571563d8e80bfa57c006fb3490ba3a513e97d3151f525c5558384

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