Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d081193499dbf2…

MALICIOUS

PDF

84.4 KB Created: 2021-06-27 09:33:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 26a1e111ba0faad4456d33de6b1e79c5 SHA-1: 43a6058ab234b2fb2cc3593fb34698e6323e13fe SHA-256: a7d081193499dbf2d890821ca2eb6e63dee5b2046464abb80aaeb3b78b5352a7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm. The primary goal appears to be directing users to potentially malicious external resources, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/52c296cb1cd7b3f54ab0b66b426534dd/tuxiri.pdf In PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/d9242b6ff1dca5834b755121b0b2f19c/35644411266.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/0d3d66012425431f1f252f0045c8733f/13483961793.pdfIn PDF document text
    • http://smeclassof1987reunion.com/clients/37165/File/pemotaravidewovo.pdfIn PDF document text
    • http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/44141380370.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/b2abbc33733ecfacf1b95699bca4b57c/51539710515.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609158c064409---91497996984.pdfIn PDF document text
    • https://ka-base.no/images_content/file/12059528157.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/sisovaremopawavex.pdfIn PDF document text
    • http://centronegozi.com/public/nakexet.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/a22e7b22038817a9021af75c0e450276/lolevumetilezatubop.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/143b7ed17fa53ece5e11de1134be1f1b/kipiluk.pdfIn PDF document text
    • https://proektasis.gr/admin/spaw2/uploads/files/47894666970.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609890eb40e7c---gepuvuliwubidazavefuxe.pdfIn PDF document text
    • http://humanlitech.com/files/files/77558503535.pdfIn PDF document text
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/5a4f81913fef22d7b81a8f4236bd6e6b/32338857922.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/c8d059c053ac51c6d68a4dcd6f35e1c5/lalawutiruzupoxirob.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16087e4b83edf3---gajabelig.pdfIn PDF document text
    • https://nestaerospace.com/uploads/file/bemobafagituri.pdfIn PDF document text
    • http://expertcomptablecourreges.fr/michel_courreges/userfiles/file/90824696503.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/0b2c7sm34dv6lsn0jhunl60gcn/xixapenisatulofiwaku.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607125592397e---78240581142.pdfIn PDF document text
    • https://ivanamihic.com//files/tixurelagalebu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=how+to+remove+border+in+word+text+boxPDF 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_off0000e676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE676 16908 bytes
SHA-256: a97b5ee1e7d77292002a68761db0d63128dfbd3efefef69da94d2eadc51e9b82
font_01_sfnt_off000112bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112BB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD2 10416 bytes
SHA-256: 80941f73048ae28746c54f4dbecdfee4f1ae485276218c02c3b85d5b5a2574ff

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