Malicious PDF — malware analysis report

Static analysis result for SHA-256 e82f763d01122ba0…

MALICIOUS

PDF

75.2 KB Created: 2021-09-05 02:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4c7b8352686aa7101814b92cffec366f SHA-1: 7e17e0005f0bc8cf9c7dadc4ad4cf9ffeea0e814 SHA-256: e82f763d01122ba022e2584a9a6a6a66dff74c6147bf03bd0ad498b9a238c5f6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many of which point to compromised WordPress upload directories on various domains. This structure is indicative of a link farm designed to host malicious content or redirect users to phishing sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution via these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985a9da430f---45499277342.pdf In PDF document text
    • http://crisismobile.com/ckfinder/userfiles/files/84458542194.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb20ac6911---kowusesajux.pdfIn PDF document text
    • http://jtg-antracyt.pl/files/file/sowikodidalafow.pdfIn PDF document text
    • https://magiccat.pro/ckfinder/userfiles/files/35187783965.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/cf50a109c1d63d2b1928976b1cb87ba5/ledilofetixaforadij.pdfIn PDF document text
    • http://auchli-appenzeller.ch/userfiles/files/fupowegaza.pdfIn PDF document text
    • http://autothudo.vn/upload/fck/file/37166780933.pdfIn PDF document text
    • http://www.aadhar-interior.com/userfiles/file/70809282837.pdfIn PDF document text
    • http://palazzodiaz.com/userfiles/files/jowekavunesul.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/5e09a453cb8bea09251ba341a8946ad0/94159438449.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/lkn9gccgpbbphirt6hr284m677/2364937065.pdfIn PDF document text
    • http://abwferrellpkwy.com/uploads/files/rapoluxojuvajema.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6fcc5d975---71806662178.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16105f5f9aeb86---65871357608.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/nitep.pdfIn PDF document text
    • http://mg001.cn/upload_fck/file/2021-8-7/20210807234332279218.pdfIn PDF document text
    • http://bor-diing.com/upload/files/67392051559.pdfIn PDF document text
    • https://dienlanhbachkhoa.info/upload/files/93640363686.pdfIn PDF document text
    • http://prospekt-rostov.ru/ckfinder/userfiles/files/18785190557.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/wovugajexipotanevun.pdfIn PDF document text
    • http://eaupureinternational.com/userfiles/file/retajakotoviziweradi.pdfIn PDF document text
    • http://www.psoealora.es/ckfinder/userfiles/files/11300256016.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/71225371122.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=this+is+not+goodbye+sidewalk+prophets+sheet+music+pdfPDF 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_off0000bfa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d7b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B4 16788 bytes
SHA-256: bbcf5e10e7b1acbcc8d518f23b650aa94bad7357b4adcc12eff9b8277aacd650
font_02_sfnt_off0001039c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039C 11564 bytes
SHA-256: d80f7d047efd8ef8c9d64c37eaa0bb3ad8f6bf690407ad53cbf0ea153f69dd05

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