Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cafbe3104446519…

MALICIOUS

PDF

83.7 KB Created: 2021-09-17 00:06:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: f32eb60f7406d8b55ade1badfd061725 SHA-1: 451e8413568bf3e23f4b06b3aac3cbca5e0aa843 SHA-256: 0cafbe3104446519ce346d920e834c4037e7d00cfd80872a085c572e0f05d4da
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links pointing to compromised WordPress sites, suggesting a link farm designed to distribute malware or lead users to phishing pages. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/faf645a8c7a50220e63d1d6d0ee738cd/xejepakasugeketa.pdf In PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/16134c4db5f33a---xuvokexukodumawebivo.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613331fdc73b0---dapatodukivu.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/j687totd4g15h8o11hqgav5bqo/58850878446.pdfIn PDF document text
    • https://thokhoavietnam.com/upload/files/6212052271.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/161426708e596f---56803359000.pdfIn PDF document text
    • http://thietbibepnhahang.net/media/files/susododisebekevepe.pdfIn PDF document text
    • https://vandolderskb.com/images/usr/32366314830.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16141ca92aa25a---vonipitatugubaw.pdfIn PDF document text
    • http://premo.at/userfiles/file/tukezivavenimolusuxu.pdfIn PDF document text
    • http://enjoybowlramenandpoke.com/uploads/files/fujinedelagole.pdfIn PDF document text
    • http://americasbestwingspa.iorderfoods.com/uploads/files/61174932531.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/161357cafd12c2---wotegexe.pdfIn PDF document text
    • http://feuerwehr-mittenwalde.de/mediathek/files/54228757426.pdfIn PDF document text
    • https://unaizahic.com/Files/files/rubizigebuxokitirut.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/13097170623.pdfIn PDF document text
    • http://www.sudaff.com/pics/file/52224087799.pdfIn PDF document text
    • http://nhahanghienminh68.com/upload/files/kibelufezet.pdfIn PDF document text
    • http://pietroquatriniarchitetto.eu/userfiles/files/8080745849.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16138940d46f21---nikofegobiwemugosebob.pdfIn PDF document text
    • http://nexxosrealty.com/userfiles/files/jisupitijofaxovifobizu.pdfIn PDF document text
    • http://bettynblue.com/upload/fck_img/20210904/file/wumekumewaxalesolipewuru.pdfIn PDF document text
    • http://zamgph.com/uploads/file/040853452894.pdfIn PDF document text
    • http://christ-china.com/filespath/files/20210910101525.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=wordly+wise+3000+book+10+lesson+3+answer+keyPDF 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_off0000e00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF824 10912 bytes
SHA-256: 0601de21de571c6a684be0e4bf4f03c93da967b7a0c0dd43b5deceaeae841193
font_02_sfnt_off0001119c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1119C 18004 bytes
SHA-256: 530af8b409bfb8fb2bec8cda218349c465ab67571b136f93bdc336678355c29b

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