Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d09b00dc31e7100…

MALICIOUS

PDF

82.8 KB Created: 2021-08-21 11:52:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 903429a54c4bab551c956a169807f73d SHA-1: 59da5c00371f2fe378955bbc00974bc8479bf61c SHA-256: 2d09b00dc31e71001e851fea4e499469da9a6000ef8289b87e8b3d8c03386e33
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous domains, many of which are associated with compromised CMS uploads or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://medvor.ru/uplcv?utm_term=apa+7th+appendix+example PDF link annotation
    • http://bankerz.in/qpic/files/39874765584.pdfIn PDF document text
    • http://toonesk.com/upload/zuwizimimujuxupizilefu.pdfIn PDF document text
    • http://4grd.com/cmsimages/file/tufevalikarabi.pdfIn PDF document text
    • http://mamnonkitty.com/webroot/img/posts/files/35811129020.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f50ad8e3da5---weboto.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba93ce8e4f---32645062255.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/c58212378624d8aea22cfe25e0b64b86/18835087298.pdfIn PDF document text
    • https://osakadentalcare.com/contents//files/39507878016.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/05b417a2b39abd0bbb0415807ef4fc54/12434377420.pdfIn PDF document text
    • https://mytekas.com/UserFiles/file/34105870563.pdfIn PDF document text
    • http://keystoparadise.com/userfiles/files/vugivimasegup.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/161103b139ca25---3415150074.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/22nk7rjs6ajr49u658jprkrp6t/30042256851.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/71bec5719ce0cfe784097794dbebcea1/44337149489.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079bd76cdd96---65469307940.pdfIn PDF document text
    • http://busangh.com/attfile/fckimg/file///20210607124918_741380568.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160de0c67df181---6575612137.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609753d080f4a---bapoz.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c13ebee18c---38713664252.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/b3057c06409b3b275ba2eb9f77701655/xiwujijomovini.pdfIn PDF document text
    • http://alicekhenrylawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zorexuxojike.pdfIn PDF document text
    • https://brothers-music.com/ckfinder/userfiles/files/konuxexalebigulez.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608348616a88b---31522166884.pdfIn PDF document text
    • http://imhome-listings.com/userfiles/files/digagimiwofupevukavivaf.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8411e5711---21332361092.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE105 10400 bytes
SHA-256: f5131a7a1516b1447de106d7537fff542deed26eb1cae9f466c79a4a3247253c
font_01_sfnt_off0000f86c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001107e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1107E 16996 bytes
SHA-256: c1d075a47fc0f4a2a9bcc8bfec781d56c48b4bf5b2cce6665d128d97927f8f20

Open this report in the interactive analyzer, or submit your own file for analysis.