Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4ba400faadd8ff3…

MALICIOUS

PDF

88.3 KB Created: 2021-07-30 11:15:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 44611864b19cb9232ef86efae8b6337f SHA-1: 68ea0979d7f394d8b9b237487d12f5d8eb728efe SHA-256: b4ba400faadd8ff3a79a7479adbdd07c49fc89662e929085144301ed65544195
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The document contains a link farm pointing to multiple domains, many of which appear to be compromised CMS uploads or disposable hosting, suggesting an attempt to distribute malware. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document may instruct the user to open a password-protected archive, a common tactic to bypass security scanners.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://stattus.com/assets/file/29233585294.pdf In PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/b6c881d0a9c8979b81b6106ddd96dbd6/86455519379.pdfIn PDF document text
    • http://haai.org/upload/file/46085697776.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16088613765550---pufufe.pdfIn PDF document text
    • http://srlamn.com/clients/0/00/00e84243199fd86ca7c15d66a0237eb0/File/20028378219.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f7d340a9766---94160545762.pdfIn PDF document text
    • https://clubslotalmatriche.com/calcas/file/pavirudoxezedofe.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/71647e39d9a96d5b4a4ce8bc5b9d35b7/63282206635.pdfIn PDF document text
    • http://dental-forum.ru/userfiles/file/68379645132.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/75832693251.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/wutudenumojafo.pdfIn PDF document text
    • https://travelstore.tn/userfiles/file/50881763512.pdfIn PDF document text
    • http://bioscipublisher.com/files/upfiles/file/pudapokidinawi.pdfIn PDF document text
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/ff5d556da34d08b048315270a82cd36e/tepatejeweputuzoris.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f0529789f---44566642834.pdfIn PDF document text
    • https://miet.hu/kepek/53354464795.pdfIn PDF document text
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/69fd7b82ea7c08301680709296479be9/61588072497.pdfIn PDF document text
    • http://taiwanglassgroup.cn/userfiles/file/pafidalole.pdfIn PDF document text
    • https://virtualpulse.eu/UserFiles/file/gewowigur.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff25606ad0---kanaripemesosomusa.pdfIn PDF document text
    • https://yptea.com/data/fckeditor/files/2496759052.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/domadilix.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160973e23c6881---talunemuwevekife.pdfIn PDF document text
    • http://bikipvuikhoedep.com/app/webroot/files/editor_upload/files/sirudidefadorar.pdfIn PDF document text
    • http://czpohledavky.cz/userfiles/files/33160373510.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=traducir+un+texto+de+ingles+a+espa%C3%B1ol+con+fotoPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9C 11168 bytes
SHA-256: cc3dc74d657c127a094ebbaf556d717fe1a1c6d16d0d03ad3bf177ff88d5e580
font_01_sfnt_off00010867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10867 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12079 18620 bytes
SHA-256: 103b6d47e28b2960b52c1c53e91dfc000626c5e92002d024b75d45c23947da69

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