Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5ee80e4ef8684d…

MALICIOUS

PDF

89.8 KB Created: 2021-07-03 19:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a14c3aabbf46946aeb394c35181325ad SHA-1: 669da88664b1e04b8ff0afefe147c0d978b9587b SHA-256: 3d5ee80e4ef8684dc6e08985d4b97db5e2b777d9023a2c8f7e8f162765bd83d2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution attempt. The presence of external URIs and link farms indicates an effort to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://garglob.ru/uplcv?utm_term=will+children+be+vaccinated
    • http://proxima-design.cz/files/file/lixawasitujukig.pdf
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608a6f083af47---89538263985.pdf
    • https://dolcezzecaffe.it/file/xaxamixinubopobate.pdf
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c94b395c70---siwurelugetuta.pdf
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/ll0suru311p8karvtn888d71sd/wutegufarabivavepesud.pdf
    • https://transmar.biz/ckfinder/userfiles/files/buxemobazebetufekezef.pdf
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/bd11ee2d733cc629132a53cc4b8967a7/34819435536.pdf
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/knd06h9ql8ag1985v7prpsu1dt/vexajezakupoluji.pdf
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/65a2279da15418ded986d3d19ad6c049/vubitibuluve.pdf
    • http://sun-green.nl/ckfinder/userfiles/files/86435621586.pdf
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c62be2cc852---depezux.pdf
    • http://amdind.com/userfiles/file/pesipase.pdf
    • https://protectname.xyz/whoisprivacy/userfiles/files/71841148896.pdf
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/661bd48322457bd9d7eb67c327d07263/fobabuvopejumokowu.pdf
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/a59893cbf7356c53478c71cd99a4ea4a/lewuzobolekapi.pdf
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2ddad122af---38527439330.pdf
    • http://akinmedikal.com/uploads/file/toludelifulilaworatil.pdf
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/65794f16bc3a7709bd4cceea6dce5f57/6564617782.pdf
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160949becccb10---83657187687.pdf
    • http://ipceurope.eu/assets/file/bogokegelofoxogabe.pdf
    • http://softwarefactory.nl/images/file/76826049627.pdf
    • http://hrt-foto.hu/_user/file/kezepunulemaduxujuxavo.pdf
    • https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/b7h598msunjm2u7j7sk6u2sak3/lejodaluxin.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160aafc4de370f---32053742903.pdf
    • http://viettranslators.com/webroot/img/files/69931955911.pdf
    • https://mobilieroccasion.fr/uploads/file/35507249923.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd7e.bin
eaa0666ec87b8a243ef95f412bbd57860ae1b3038eabd09cad3bceb8de038b40
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7E 17344 bytes
font_01_sfnt_off00012a6f.bin
fca7a9781ac31fabcbf36ac935a0b8b9ea68449d7e4e85f41057f2bc39e2d318
pdf-font-stream PDF embedded font (sfnt) at offset 0x12A6F 10376 bytes
font_02_sfnt_off000141d2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x141D2 16792 bytes