Malicious PDF — malware analysis report

Static analysis result for SHA-256 29419c5191f21dc1…

MALICIOUS

PDF

89.6 KB Created: 2021-07-04 10:06:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ce123c8ecb424ad3f892fe0de32d9fcb SHA-1: c27f98421c0cb01970bb837010bbf0e45995a8fa SHA-256: 29419c5191f21dc112fd1bda3efdb9d9bbc60bb5ef5147e6f91054cd7078d15b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage and disposable hosting, suggesting a phishing or malware distribution attempt. The presence of embedded URIs and the overall structure indicate it's likely part of a spearphishing campaign.

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://synerhu.ru/uplcv?utm_term=light+in+the+darkness+bible PDF link annotation
    • http://chicohigh1987.com/clients/47015/File/wiwumesadenewabisewune.pdfIn PDF document text
    • http://teknis.it/userfiles/files/74426096849.pdfIn PDF document text
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/96f1c1c136bf9a57901845a28e077bd8/1571710316.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1606c87ec1729e---53202539583.pdfIn PDF document text
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/l8fktdfi9tc7lb54hf11v1oiok/fitenaseki.pdfIn PDF document text
    • http://kfbi.ru/content/file/vidurokuzofeb.pdfIn PDF document text
    • http://emannsltd.com/userfiles/wolilefepufor.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9d951020b4---joluxiwanepetetejolisate.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160aa7de71dad5---disobanamipokenipige.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/vaedupsv1gvlre7u6jdu6qevh9/7682924357.pdfIn PDF document text
    • https://schmitz.cz/res/file/24935561575.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f111a26cc0---26928433501.pdfIn PDF document text
    • http://kondicionery-lubertsy.ru/upload_picture/file/towaz.pdfIn PDF document text
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/878f2f5bb35b803b4e2ee6008de17085/tufubowa.pdfIn PDF document text
    • http://fitviewer.de/files/file/69725941961.pdfIn PDF document text
    • https://nikosdimos.gr/userfiles/file/57408974263.pdfIn PDF document text
    • http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/nmioktfvm4rh4p7oap5366193h/kotesewar.pdfIn PDF document text
    • http://visit-pune.com/userfiles/file/58003827275.pdfIn PDF document text
    • http://short-story.ru/upload/file/muxovu.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/9a1f139bf7d1708d53e3bcec29b289aa/nuvewepateremozevofemu.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/taselirudeseleranakab.pdfIn PDF document text
    • https://biodent.ro/m4fm_files/m4news/ck-uploads-files/mafomisosuba.pdfIn PDF document text
    • https://soportedevida.mx/ckfinder/userfiles/files/lusazamupuluda.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd362e71a7---10128108262.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/601a0afc9083143c34c545afdb8e1af3/4024206532.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_off0000fb13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB13 10596 bytes
SHA-256: 686d4f014f8ade295eb0501076a7763d7819e8c6071d1cce59e84289a81b619b
font_01_sfnt_off000112fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112FC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012b0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B0E 17620 bytes
SHA-256: d4cf3ce8e9ba245aab6c51670095dc76b05dd96449587a2295732556fdbd81e2