Malicious PDF — malware analysis report

Static analysis result for SHA-256 9331b00dce39562f…

MALICIOUS

PDF

70.3 KB Created: 2021-08-03 13:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0b9fa8c5c6d9fd8781372559a5d4cd4d SHA-1: 15cc49d4798005d38ab7f726dac91e2034f54d4a SHA-256: 9331b00dce39562f07f224a58b4dff0c805067d866bb8a3fb492ace1876410ec
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to compromised websites or disposable hosting, indicating a link farm designed to lure users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier further support its malicious nature. The primary attack pattern involves tricking users into clicking these links, potentially leading to phishing or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8265

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://master.plus/wp-content/plugins/super-forms/uploads/php/files/fe8f03164b67023309e5097c096d7208/xifodod.pdf In PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-4-29/20210429065633936786.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fa3dbabe249---gavuvaneme.pdfIn PDF document text
    • https://dursunguney.com/userfiles/files/tixogegoroxarexigivukotol.pdfIn PDF document text
    • http://bartuceviri.com/userfiles/file/94783037876.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/en54ujvrh7cvitooufj9peduv0/57733219872.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0cfa52bd29280678e45c1045a8398140/merutesimaguxe.pdfIn PDF document text
    • https://www.anandtirth.com/wp-content/plugins/super-forms/uploads/php/files/hf66nv9cifdfjmst17o4s3i0m0/nawesume.pdfIn PDF document text
    • http://georgekoldun.com/var/upload/file/54074228336.pdfIn PDF document text
    • http://zhfangyuan.com/uploadfiles/files/99437988640.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608c60d769e67---15760824648.pdfIn PDF document text
    • http://icwest78.com/clients/67591/File/50344635605.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/04oe8hl3o8s326srofs3ku8kct/zijujamidefodamubimer.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/eb0sqf9kp1eqi103m8ot92vttr/zetusugasetojunatajasezuk.pdfIn PDF document text
    • http://sbsinternationalschool.org/sbsisnew/userfiles/file/94513811424.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/7k8iu3c550p66oi1bnn3vk6e59/5458990972.pdfIn PDF document text
    • http://masan315.net/board/imagefile/file/wumibozamojelikidimidaw.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160d567646eb44---14950840244.pdfIn PDF document text
    • https://novzelandiya.ru/ckfinder/userfiles/files/76535756826.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/2963c928a48d15c7967d9c262d7a72e7/napimaf.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/8542e89de06dc198d6b4dc7ee4baa4ec/81817376714.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f465d30daf---64013370740.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/fbit745rhvbgqdkillb66qm7qt/45478881974.pdfIn PDF document text
    • http://zonwering-belgie.eu/ckfinder/userfiles/files/69010334908.pdfIn PDF document text
    • http://jan-fotografie.nl/upload/files/97291309095.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f312bf0391---xujexedatoxetokimoginepod.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/00ce7334d037b1a0c926979a4afb7de5/90966303087.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=serial+key+freemake+video+converter+gold+packPDF link annotation