Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e38f622a792154…

MALICIOUS

PDF

64.0 KB Created: 2021-08-11 06:28:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6ce403fc5b7088e97fd34f4171036fb1 SHA-1: 10755a590e4aaa2b47408896b1059726f9ae4439 SHA-256: d2e38f622a79215473d463e34c2bbfe9eb7ef241e6b8ec19e8bf84d435e2f259
154 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed for malicious redirection. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The presence of multiple compromised upload links and SEO-optimized disposable link farms points towards an attempt to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9885

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://infrive.ru/uplcv?utm_term=bomber+friends+cheat+apk PDF link annotation
    • https://advertisementnepal.com/ckfinder/userfiles/files/joniliju.pdfIn PDF document text
    • http://anaminfo.com/attachfile/file/vobutipumajutu.pdfIn PDF document text
    • http://marmaraisg.com/images_upload/files/11116335270.pdfIn PDF document text
    • http://color-gateway.com/userfiles/file/bebebadebeke.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/cacd86ecf88b196fd040bae69b8eed31/nuvujixazuxu.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/1d11343c98d7a221db30eb249f79047f/35394721258.pdfIn PDF document text
    • https://tannhatviet.vn/upload/files/pipigom.pdfIn PDF document text
    • http://cz-synergy.cz/data/file/mukerotemenuliz.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/g08grivodjlnea005fdvs6scf4/53526036500.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608958a04aa32---zefefevi.pdfIn PDF document text
    • http://bestbuyfromindia.com/userfiles/file/83324839783.pdfIn PDF document text
    • https://galerie-louise.be/userfiles/files/60738581755.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/fvle27npj7vsmkn4mp5bl4c0j6/70185845877.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a17bb0998f1---kelifidumagapi.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a7081e0f060---48203768034.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1608721b559feb---18684436694.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ba868a62575---33677947297.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/vp0f4stpejrpnvrnvdv8kqqnni/74967423451.pdfIn PDF document text
    • http://cityhighclassof77.com/clients/9/9e/9ea685038b5a197d2022a69b8c6b162a/File/niliwamadoz.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160783bc12f7f2---35262390787.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e7db95a65---78903980199.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608189358f072---68075975526.pdfIn PDF document text

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