Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd4ed5cbbd2b050…

MALICIOUS

PDF

106.9 KB Created: 2021-07-23 13:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: d70c0eaa56fc176cdb11ac5a034d0270 SHA-1: 41cca51be20c072a514c2dcd31e5df1a71b7fb6b SHA-256: 3dd4ed5cbbd2b050159e519a27f629df5f37e82e0176e3c8bc383f34e231cd22
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9872

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://rogersdesignhouse.com/uploads/files/62109490929.pdf In PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/2k7uu7p7c0tbo9c265p3p3r2qr/23548264037.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/c9337b83c03128deab1c1f9cd4f851b1/81005072695.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/83862137314.pdfIn PDF document text
    • http://studiotecnicoarduini.eu/userfiles/files/tamarugejoniverewakiwir.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/7579130555.pdfIn PDF document text
    • https://travelworld.ro/userfiles/file/86308138804.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/tamaxiroxulodinusit.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/a8141965200197a002b18d941a96fca0/22014707904.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2f45e4cca---77295725485.pdfIn PDF document text
    • https://ooo-kenk.ru/userfiles/file/22748025392.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/e7c807792c26142a4c9ce846c44c20f5/volekexazeribibejakagofu.pdfIn PDF document text
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/1b0c9ebb0db904e32d778c8c01deac05/29444735266.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c519e5b5f32---44133163765.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/hrns31uo8s4uiicdjhroj6llgb/44650114358.pdfIn PDF document text
    • https://prairieroseclothiers.com/FCKeditor/file/texadivatazutifetudaw.pdfIn PDF document text
    • http://harchovyk.com/userfiles/file/67739496269.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a80ba8bea36---28528317162.pdfIn PDF document text
    • https://telechips.com/ckfinder/userfiles/files/xetan.pdfIn PDF document text
    • http://limoride.net/gallery/file/97064072883.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/596cb8pkv0d9iib21mrbtmnfgt/38943378835.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607d52a942430---73922346478.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607909c607237---boxumi.pdfIn PDF document text
    • https://cavalier-hundezucht.ch/userfiles/file/jadizepotuxapasej.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160758f3a46cfb---gamogob.pdfIn PDF document text
    • http://builderall.info/userfiles/file/wigotapipupezamu.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/7rfojnvm21hvre8djnjb3a77ve/joxobijirinopejaser.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=que+se+entiende+por+recolecci%C3%B3n+de+datosPDF 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_off00013dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DCB 10804 bytes
SHA-256: 10cbb9a8ede6df000bc2742e8269c40ff7df00158ce88676a9d05e95b0a61f82
font_01_sfnt_off000156a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156A6 17520 bytes
SHA-256: b1ec34517b75102dbb56f9dc31738a1db8e08df48ffa2603cb5d4b22ddc2a98b
font_02_sfnt_off00018349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18349 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1