Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b3acde2781baaaa…

MALICIOUS

PDF

103.4 KB Created: 2021-06-27 07:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 54a43c9644212b6750dcf20e4bd6515f SHA-1: 414da94c1c2720fdd2af6524e7e693edff2b445f SHA-256: 9b3acde2781baaaa56b9160b0c5f241b59578abde05357dff30699cf51845d76
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan distribution attempt. It functions as a link farm, containing numerous URLs that point to compromised CMS uploads and disposable hosting, likely to redirect users to malicious content. No scripts were extracted, but the presence of multiple external URIs suggests an attempt to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

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://drafthe.ru/uplcv?utm_term=to+build+a+fire+short+story+pdf PDF link annotation
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1607331bdebe25---57058098844.pdfIn PDF document text
    • http://bean2beenefamilytree.com/clients/60578/File/dobanofofojijofe.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2801d539d---xojugiguwutozamametipaju.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/34a45720eeaa2f860940b355a9fb30a1/jaxirazobozasorugijunuri.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7c54efe91---purego.pdfIn PDF document text
    • http://archinfo.ru/uploads/file/gogupurotavunadonipunaxo.pdfIn PDF document text
    • https://cleaner.pl/userfiles/file/lalugenipefapuwub.pdfIn PDF document text
    • http://tsg-edinstvo.ru/userfiles/file/mujome.pdfIn PDF document text
    • https://aslimitada.com/userfiles/file/91871981635.pdfIn PDF document text
    • https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/k8shfu5mth8c8882a038imfq20/45257668069.pdfIn PDF document text
    • http://www.pilonidalsinus.gen.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160787c81e240f---61826069073.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608623cee7b87---10306747619.pdfIn PDF document text
    • https://zionapostolicministries.org/uploads/file/wuwabevujabotuwujejap.pdfIn PDF document text
    • http://nesthomes.in/userfiles/file/6871417031.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160c97599e16cd---2441015287.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/wubileteripevexawebifukof.pdfIn PDF document text
    • https://clubelsendero.com/img_pag/file/tuvizojoxetadelibixoduli.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074996ea1805---fuvusibefij.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160998f54ac4f3---sewodenatedatol.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/4eb1d90c64eabe010540ba0db44db7dc/lulutubabulesoxatoziled.pdfIn PDF document text
    • http://zatexpress.com//upload/userfiles/files/72291477625.pdfIn PDF document text
    • http://dianacb.cz/userfiles/file/24384583850.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/g598l9g6kes7lt8rhe1oh3v7df/sawaxijipisexipi.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/6b7f3ad3a3464d360e242358cfbe4e1f/65732495223.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_off00013636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13636 10808 bytes
SHA-256: 6870b6ea56367018ade431800f74a16d5594abab346c836f11196b55642a170c
font_01_sfnt_off00014f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F0F 16224 bytes
SHA-256: 82f4905c97f10f4a3b3d7caf95e2ccf697ae20ff71706ce4df56a53f6e529645
font_02_sfnt_off00017852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17852 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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