Malicious PDF — malware analysis report

Static analysis result for SHA-256 115312cd0adbdc5e…

MALICIOUS

PDF

70.7 KB Created: 2021-06-27 17:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 61e5cb83f6b1c980e974e75ac665f3fd SHA-1: 517193f7256311edc65ae2928a1ba7932934d5aa SHA-256: 115312cd0adbdc5ef834d14bd6842969d72325022fcd111b90eccdcea2ae0a4c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected by ClamAV as Pdf.Phishing.Trojan and an ML classifier flagged it with high confidence. The PDF contains a link farm pointing to multiple compromised WordPress upload directories and disposable hosting, suggesting an attempt to obscure the final destination. The presence of external URIs and the nature of the heuristics indicate a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160886a9d9af34---goxowezaxusirexejimilo.pdf In PDF document text
    • https://rosewoodcity.org/nbloom/fckuploads/file/9404857778.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/76be04fa277e4d1e78251cf8f84d8a70/rojeguwutuketerawijiv.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/icehfd34jhj0578nb8bb9qenev/xakolobiru.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16073490e485ee---rilimam.pdfIn PDF document text
    • https://cottingham-group.com/cufiles/files/48918083818.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16090bc702bb8e---84520575669.pdfIn PDF document text
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/ce10945ba1797b447968b112a8014791/xivejujifidaravovav.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1608163f6e8052---50167896348.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/47932277811.pdfIn PDF document text
    • https://gencerenerji.com/resimler/files/zijuzevaw.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/299490dcf121162c350525cfdf9af797/39904352711.pdfIn PDF document text
    • http://bhhangkhong.com/upload/images/files/soxela.pdfIn PDF document text
    • https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/lva1ds1917l7gp0rvune88tmrm/33121558585.pdfIn PDF document text
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/52mkg3c2kiln8saup5g77agf17/forijigozobevafasixirag.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077c77ebf5cb---vokepojebewofujop.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/bb87a5f138f105d570ee495ce3946380/46309805877.pdfIn PDF document text
    • https://searchlink.org/userfiles//file/29717290934.pdfIn PDF document text
    • https://zlatartopalovic.rs//files/mopebodumoxepav.pdfIn PDF document text
    • https://mides.vn/images/ckeditor/files/38724809665.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/3dff9b6935a96e84019f74b066c10899/14923868713.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/2be1ab56ff31a5922c378654ed703884/77623710370.pdfIn PDF document text
    • https://www.profiemg.cz/upload/ck/files/79690663562.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/92724342208.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=chapter+21+alcohol+answersPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b81d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB81D 14612 bytes
SHA-256: df48410a279c68e6b0a148954b2089788fc2068dc84b7a7ed643eac31fe2a038
font_01_sfnt_off0000dcfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF512 10668 bytes
SHA-256: 54b6ddff032ea14ede3967c0300c9a056b988db0d829c05f0556895c7de74c78