Malicious PDF — malware analysis report

Static analysis result for SHA-256 56589ab2243d1a05…

MALICIOUS

PDF

77.8 KB Created: 2021-10-05 23:15:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 49662967671f68c007760da03f77b18e SHA-1: 07d25b50bcb17c91e74325152d474853d899ae2a SHA-256: 56589ab2243d1a05c6e4abfbaf585b6745aa953a256be62992ec1dac347d619a
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous links pointing to compromised WordPress sites and disposable domains, indicating a likely phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, with the embedded JavaScript likely facilitating the redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9829

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 http://citranco.com/users/files/59470709213.pdf In PDF document text
    • http://hvpeds.com/upload/contents/file/kapamiguvajadar.pdfIn PDF document text
    • http://space-edge.com/upload/files/biwarugelif.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614cfe18bfb2f---kubakevotaxedomapirafeda.pdfIn PDF document text
    • http://nfraccon.org/userfiles/file/dotesetawuzonuxiguxa.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/bd32ff7a84079d8c0f21ae9d65be8db1/korena.pdfIn PDF document text
    • http://xpeedon.net/userfiles/file/20210914203136.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16144d7a78742f---nakofujexixewuma.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1614fed7d09a44---zuxenidifofatode.pdfIn PDF document text
    • https://suacuachuyennghiep.com/uploads/files/runotevuwa.pdfIn PDF document text
    • http://twtime.com/uploads/files/202109052148223245.pdfIn PDF document text
    • http://funkyspa.net/ckfinder/userfiles/files/31224249034.pdfIn PDF document text
    • https://doluhosting.com/calisma2/files/uploads/lonamilifalarabilozega.pdfIn PDF document text
    • http://peter-crooks.com/userfiles/file/30216406978.pdfIn PDF document text
    • http://ljjxmining.com/uploadfile/file///2021091114311472.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/161584228bd32c---13534426832.pdfIn PDF document text
    • https://kysig.com/app/webroot/userfiles/files/buxituravuronomep.pdfIn PDF document text
    • https://aedwea.com/upload/foto/sotikemuxuli.pdfIn PDF document text
    • http://soyaksiesta3.com/userfiles/file/sukagamevikiwokiletut.pdfIn PDF document text
    • http://silver.jo/ckfinder/blanc/files/pawiferudulojikunugobufi.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/8q49tjlhct3upn6fo1p11fdtc7/zidudunobenoz.pdfIn PDF document text
    • http://hefei.chinatupai.com/web/js/ckfinder/userfiles/files/mufipefemigegovozedeja.pdfIn PDF document text
    • http://zzps.pl/userfiles/file/95637817205.pdfIn PDF document text
    • https://maggievanostrand.com/uploads/media/file/zutigarotosaj.pdfIn PDF document text
    • https://ashasuchikala.com/ckfinder/userfiles/files/57472769786.pdfIn PDF document text
    • http://24x7taazasamachar.com/assets/ckfinder/core/connector/php/uploads/files/jasusawegajuvuvagibolebi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=there+is+no+time+like+presentPDF 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_off0000ce3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE3D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e64f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64F 17252 bytes
SHA-256: 6cb1e5209b66b6759b584a931432a420cf05fc5bc8f4aed543fb3cc5d559725d
font_02_sfnt_off0001127d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1127D 10408 bytes
SHA-256: fd37e2e8d64233585fe4c820461851ffc475178b980362da337bd94711b01138

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