Malicious PDF — malware analysis report

Static analysis result for SHA-256 e455c5b4c7ecdf2b…

MALICIOUS

PDF

70.8 KB Created: 2021-05-03 23:31:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc55ee39f3afc3d33e2fc1b3b4010502 SHA-1: c7d736cae87eaa991ec29722d5d92a9b8c6af42f SHA-256: e455c5b4c7ecdf2bdd98a512d3212d0dd142f29b38e21a4cf8ac622cb42ba19a
154 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to numerous compromised CMS upload directories, a common technique for hosting malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery. The embedded URLs suggest the document is designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9694

Heuristics 5

  • 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
  • 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://foundryindia.org/userfiles/file/57632089574.pdf
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c92b6ae88e---7470202648.pdf
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e14d73dbd5---dovaj.pdf
    • http://adaviestransportltd.com/userfiles/file/deref.pdf
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/f9f28km3eg2vc1o4lahbht46i1/97021986227.pdf
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/599101a5b7b73502733cf196f6fdf2ca/73969911041.pdf
    • http://aarogyamedico.com/userfiles/file/rubomofipikanepovadebusaz.pdf
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/476600a659e17b5862e016bafb2324cb/jipigitopowegarerafi.pdf
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/fr9t046eeb1nsfjfd19m06b454/rumagopuz.pdf
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085f86cae581---gesaxugekede.pdf
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f177f56603---waluretupadasajetev.pdf
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160792ed4a7d0d---24903313900.pdf
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8657b0168---61787938961.pdf
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/oa332b9l2nbbp2vhlsnvlp39fv/27547686461.pdf
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607faeaba8405---24680940955.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=adblock+for+android+games
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe1f.bin
e39f0a29f3da753d3c0733b29d33bd0611081af5118da71be3c1f68f2aa042bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1F 5532 bytes

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