Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e6515e2951dcdc…

MALICIOUS

PDF

78.1 KB Created: 2021-07-04 00:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 1c5699da63275416a2fc1b71be05f885 SHA-1: 0aceaadb7a691693a000ac77faba3194639e9e98 SHA-256: 17e6515e2951dcdc477157105b3f2773f713340fe51d50b15b50623ac4ab472f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript, which is often used to initiate malicious actions or redirect users. It also features a link farm pointing to numerous compromised or disposable hosting sites, likely intended to host phishing pages or further malware. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://drafthe.ru/uplcv?utm_term=i+will+always+need+you+you+mean+the+world+to+me PDF link annotation
    • https://girl0229960192.com/upload/users/files/99977504693.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/54f8612c3d50f77bfc71364254dc6a86/xilexo.pdfIn PDF document text
    • https://consultingexpert.eu/fckeditor/userfiles/file/mupirusile.pdfIn PDF document text
    • http://www.derbysignandgraphics.com/uploads/file/22606395378.pdfIn PDF document text
    • https://pirkitpadangas.lt/ckfinder/userfiles/files/94782096702.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/67r5tpghnmn3gvat8ttgf19v0j/zafujapomadusirapewonaz.pdfIn PDF document text
    • http://tz5168.com/uploadfile/image/2021/06/12/file/20210612_141107_112.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/c01e4078a582c4618231ea4c8c581eda/bejafi.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/mlem53kohk4jbgmd27g3r7f6u3/vigidujidigamuketip.pdfIn PDF document text
    • http://libertyquad72.fr/userfiles/file/levoxuwerux.pdfIn PDF document text
    • http://xn--49s538bo8ux8c.net/userfiles/file/78942956382.pdfIn PDF document text
    • http://hcvitamin.com/webroot/img/files/kokerufa.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfe01f85978---84091774271.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4e49b8a60---timujalozowuteluruluku.pdfIn PDF document text
    • http://askort.pl/Upload/file/18530763795.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/4nbkvtnu88pb131vuhc95dh361/71608808507.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ad4883f1c9---28350623804.pdfIn PDF document text
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/ea06b9eb184b13f45d5161125d002565/99864075416.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f08ed3bd6---piradubepoxev.pdfIn PDF document text
    • http://irina-beha.com/ckfinder/userfiles/files/bigoji.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a8524835a65---gadediv.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/7d2b8eaa6d65ab025d10e201094bb382/zutenewewetojitovupufolen.pdfIn PDF document text
    • http://minerva-collection.net/files/files/7782656745.pdfIn PDF document text
    • http://gunjanjain.com/app/webroot/js/uploads/files/werimemid.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDEC 17248 bytes
SHA-256: 47da028ae7ba9121594883b3f0cc670d7cc5531ac6808a30bf875173b7e15f45
font_01_sfnt_off0000fa2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2A 10764 bytes
SHA-256: c072322bfc9d68b6e02ce3ff8cf101df30e699cd6b6d8549370c111f7772997b
font_02_sfnt_off000112c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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