Malicious PDF — malware analysis report

Static analysis result for SHA-256 27952cbf840b447e…

MALICIOUS

PDF

102.5 KB Created: 2021-07-17 22:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 65b7f1472c2a5ccd2ce7a26d326612df SHA-1: 99c906b5b49c588e3d89a6069b6d46acfec27494 SHA-256: 27952cbf840b447e032bd8ca0fba713a9bad91df2322d81ddcea9bcf7a5f4146
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document functions as a link farm, with numerous URLs pointing to external sites, some of which are hosted on compromised CMS platforms. This suggests a phishing or redirection scheme, likely intended to lead users to malicious content or further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9682

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://piataafacerilor.ro/app/webroot/files/userfiles/files/rumevewiwun.pdf In PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae00ef6b5d5---24341089986.pdfIn PDF document text
    • http://zap-interactive.com/uploads/files/53800264746.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b95d737d31e---mivezolazume.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/9a43afc61e25738221a8a7adececdada/94663572353.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ae80e855767---7631485483.pdfIn PDF document text
    • https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/4a5f6e2aa1b9347604e59c2bb09d517b/kegokeguxowumejinel.pdfIn PDF document text
    • http://st-ark.it/userfiles/files/birudagikezikagijepelos.pdfIn PDF document text
    • http://4seasonstours.in/userfiles/file/larolosepeputuv.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca1dde5508---gikelukewiboniva.pdfIn PDF document text
    • https://gadd-asso.org/userfiles/file/93706364462.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/9ac4856a8668df6203fc45ae1b917f10/12586315447.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855a232633a---78271535258.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bbc7f97b5f6---rozevatagifaziwadojizimed.pdfIn PDF document text
    • http://geriatriccarenewjersey.com/userfiles/files/45569524683.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ba98fecfc4f---85702462352.pdfIn PDF document text
    • https://bataretak.com/img/files/file/42785244726.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608c4d08db5d6---fafaxuvemexasoxe.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160868f392b0da---debibedifojufiduse.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/6d19a7eb9666de5e03acaf3c486d272e/fabanogepen.pdfIn PDF document text
    • http://izdepskifamily.com/clients/1/1a/1adacdf247316bc4617b3617d965acc7/File/32278850628.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acb9af0f4a2---5625108738.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855112a2f1a---41181819969.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/q6d3kl6h8g41ll2094oqotvbf4/sevuvufed.pdfIn PDF document text
    • http://spc1991.com/ckfinder/userfiles/files/kegife.pdfIn PDF document text
    • https://wotfiles.com/ckfinder/userfiles/files/garasajetizotimosixobe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=jee+paper+2+2020+question+paperPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000111d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D7 19300 bytes
SHA-256: c08c6dbdf76cc4d511024ba37d8e0f4547d8e3aab748705bc5a7304850947e88
font_01_sfnt_off000145c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145C0 16092 bytes
SHA-256: a37c6052708a11292b84d6ddbd984f933181f63e6b3fea8565785f9b56dba974
font_02_sfnt_off00015afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AFE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00017315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17315 10680 bytes
SHA-256: 2f1ad5fdfff7703bca287838203e7e9e913d7cf5b863a33c3ba14645be04ec73

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