Malicious PDF — malware analysis report

Static analysis result for SHA-256 26e7d55076eee094…

MALICIOUS

PDF

168.3 KB Created: 2021-06-27 20:07:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e40bd9be9078479d217f03c51afb9cbe SHA-1: 419d1493be5203b9c7b3b6c9220d14dff602275e SHA-256: 26e7d55076eee0940fa0450ccfd67119dfbe5b5a3edc7f23943cb44c066d7e7a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to websites hosted on compromised CMS platforms, suggesting a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9392

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://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/de524d58bde67d4a572878e862e57898/44705855729.pdf In PDF document text
    • http://shipagents.nl/uploadfiles/file/6887638673.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/66f6cd9c736b6b8709269f59fc572870/matigexumisibunuxumuj.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160878b18c2069---pepuloxanatifef.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/16086468ba8715---molapuvilefedorinamalo.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bb6b59931b2---17026547667.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d34b096ea9b---83752968980.pdfIn PDF document text
    • http://aaaexpressac.com/userfiles/file/miwemutobalex.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608793b32c198---30997903247.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/897608094f30c8ec1e7ffa1dc3b1f736/galilabexirexizal.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/42b685822638248f7df17b99e67db04a/72659950389.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/b9efff764ee81b998e1fd5a53ec83d4c/xomelaxesinobisusuv.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/m8ml7d36inp9cnd8v6gumcgrsk/zakuwotosubasor.pdfIn PDF document text
    • https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083db77a4507---monofajozej.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/96525299988.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa60c8b87cc---92107256312.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/032050575838.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160988e60576a4---12925412030.pdfIn PDF document text
    • http://efuegypt.org/userfiles/file/18661104658.pdfIn PDF document text
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/b962114ab0787a3cfc7e2c1e2283db8f/lofubapojedumotujelagiv.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/a33b6eff4214cf7277eff7d1eb5f9f68/51364043862.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160870def8fef9---4365033691.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=meaning+of+sidewayPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001db09.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1DB09 39900 bytes
SHA-256: a2f6b5e45d7b6a64f0a0d6caa1b3f53aac8ba211161c09d746048316843300e0
font_00_sfnt_off000170b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170B1 37336 bytes
SHA-256: 42254b0b9c10a0de1bc31e5cc1e0ce078d9f486854e89e444e329e9f64b5e6eb
font_01_sfnt_off0001c2f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C2F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00022316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22316 10480 bytes
SHA-256: 5ab2eb4fe656e79e73cb42ee99459277ceeffd0df59fe65f57bb44335f3e937c
font_04_sfnt_off00023ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23AD6 30952 bytes
SHA-256: 90ccf16a355338bb858a065b24c2484f56ff84abf9a0e5cd9c61a88657e644ea

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