Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f023e204cf1a030…

MALICIOUS

PDF

92.0 KB Created: 2021-07-04 23:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 737f59ce0ebf75415d3541a6bc8ff609 SHA-1: 0c3c2d016fb11c303df642b24f4589e3161dd172 SHA-256: 7f023e204cf1a030880d73df0cf36f57d444e3bd397f14f1e626e41de73fff75
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://laborke.ru/uplcv?utm_term=bedtime+for+12+year+old PDF link annotation
    • https://salubrismd.com/wp-content/plugins/super-forms/uploads/php/files/5f98714c117b0abd531ecf6f452154b8/30127838633.pdfIn PDF document text
    • http://liddellgaryfamily.com/clients/863293/File/62372494226.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/f8sn5p4i9vnl0p4ao1io0q7sb1/tiwavidafemejawod.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/kabuv876atlvit2guljrp8biv1/26371840559.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/2828142444.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/132b85cc1ca7b4076c22b40f258594f9/jolixaji.pdfIn PDF document text
    • https://nhathuydesign.com/wp-content/plugins/super-forms/uploads/php/files/qjosgf7jvtt9f9g5fuaj7ek7f6/24192437198.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/baxigeporokivaxikomuzejom.pdfIn PDF document text
    • http://benardoutlite.com/admin/fckeditor/fckdata/file/disiwi.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160792fecd59cf---12946891338.pdfIn PDF document text
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/7ff6bbf22214a1f24dba070a242e07e9/bekexululerikozubinoga.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c10941400---naluta.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609b430b1756d---kuwofudunu.pdfIn PDF document text
    • http://share-world.tw/userfiles/file/9943608326.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/cfb59694e83fb25d6c15910f0b10fde7/60129314173.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076c94ed0d1f---nigumid.pdfIn PDF document text
    • https://zenkenmoshi.info/images/files/file/begevagumipeni.pdfIn PDF document text
    • http://nano-vip.com/ckfinder/userfiles/files/zugim.pdfIn PDF document text
    • http://cybernet.asia/UserFiles/File/digoluwazanodet.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a59b18d8b74---fatetel.pdfIn PDF document text
    • http://nuraski.pl/wsg/userfiles/13712422496.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/b5s3h1pf6dvu4mki9gtdd54n0o/34211260872.pdfIn PDF document text
    • http://ehomeforeclosure.org/images/file/77759650554.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_off000105a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DB5 17104 bytes
SHA-256: eeb28878149be50704a9da5488c20726ce60bd7caf3be3dae89c3e0158c0a705
font_02_sfnt_off00014a96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A96 10584 bytes
SHA-256: 3d82bb5505428e04767ca818c6384345df3e0be245707a97bbb0c555174eede0

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