Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb4b184fc70b5ce…

MALICIOUS

PDF

81.2 KB Created: 2021-09-11 11:06:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 2592eb7470cec5649a71d104a87c7189 SHA-1: e732521d516dcb38820c3e5f380a7ff10bd1c23c SHA-256: eeb4b184fc70b5ce426afba3f32490cc1f71f2048d153b86da3448aaeb4c3433
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm directing users to multiple websites, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of numerous links on potentially compromised or disposable hosting reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 http://dentistturkey.com/image/files/3160997649.pdf In PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c3e880df80---91751367427.pdfIn PDF document text
    • http://harmonie-avion.fr/actualite/files/bavaninixusiwuvovatani.pdfIn PDF document text
    • http://www.chp.pl/ckfinder/userfiles/files/kemusutakeluzav.pdfIn PDF document text
    • http://dieutrimun.myphamkangnam.vn/webroot/img/files/52046692052.pdfIn PDF document text
    • http://langfordfinancialservices.com/userfiles/files/43281482858.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/55175927720.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/h4v2vr84q7dvmnenaiuot1dv5r/muzozesebebejijot.pdfIn PDF document text
    • http://sherwoodonionfestival.com/ckfinder/userfiles/files/guzovamokakunefolinave.pdfIn PDF document text
    • https://www.parquesanalbertohurtado.cl/ckfinder/userfiles/files/82941209116.pdfIn PDF document text
    • http://www.ks-klinika.ru/ckfinder/userfiles/files/wusixulunatub.pdfIn PDF document text
    • http://caudafotografia.com/userfiles/files/xilifuluxukuvisim.pdfIn PDF document text
    • http://arebiatours.com/uploads/files/59569220673.pdfIn PDF document text
    • http://skkl.cn/filespath/files/20210908114307.pdfIn PDF document text
    • http://a1-automotivegroup.com/upload/files/wibovopijivuwulabixejafa.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613813f2b1fa2---gabadisotok.pdfIn PDF document text
    • http://standardamulet.com/files/files/fijusena.pdfIn PDF document text
    • http://helderlive.nl/ckfinder/userfiles/files/fipigorisijuvuwiditisuzel.pdfIn PDF document text
    • http://compow.net/ckfinder/userfiles/files/13093727166.pdfIn PDF document text
    • https://ykitraders.com/UserFiles/file/17441351221.pdfIn PDF document text
    • http://areaengineeringsrl.eu/userfiles/files/82361641617.pdfIn PDF document text
    • http://dongbanja.com/userData/ebizro_board/file/gazanoxikomirinevegamame.pdfIn PDF document text
    • https://stpm-sa.com/userfiles/file/17317128813.pdfIn PDF document text
    • http://fu-xin.tw/uploads/files/202109072333447412.pdfIn PDF document text
    • https://turbooto.vn/upload/files/3524414078.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=free+fire+only+apk+not+obbPDF 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_off0000d971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD971 10508 bytes
SHA-256: f5db19325b86807099c0abbe8a6cb5a8ecff3744f5fa2201e0c6087e68bcbcdc
font_01_sfnt_off0000f133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF133 17532 bytes
SHA-256: 285d1373688a2cebc04f7c7243c6c4cee397fbe4049bac5f42931cfda4716294
font_02_sfnt_off00011f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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