Malicious PDF — malware analysis report

Static analysis result for SHA-256 045b438a23d0eb8c…

MALICIOUS

PDF

69.6 KB Created: 2021-08-15 02:54:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 8a0aad68f6eb8886a7a0bd56aafdf2d0 SHA-1: f39a35fdb329af89fbf774d3458fb65211e246c2 SHA-256: 045b438a23d0eb8cc46db89efe72bb29d3997fb5a68f932b9932d5e68f3ab3b0
154 Risk Score

Malware Insights

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

The PDF contains a link farm directing users to multiple URLs, many of which are hosted on compromised WordPress sites. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution through these links. No scripts were extracted, and the document body was unreadable, so the attack pattern is inferred from the URL structure and heuristic firings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6374

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 http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160bd0dcfe75a8---14716143128.pdf
    • http://orourkelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/biwatutunaxogixulufavi.pdf
    • http://sumterhigh89.com/clients/863574/File/60047705690.pdf
    • https://www.disbel.es/ckfinder/userfiles/files/lefejavibakife.pdf
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/35e59e24df9933977d9d28e741cbc19f/65427077168.pdf
    • http://bhttourist.com/upload/fckimagesfile/44139759143.pdf
    • http://lumieretvie.com/userfiles/file/zibogizaponapubileja.pdf
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/6f11b6cf4774a345ab43a98bc6a2ef09/50991357588.pdf
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/ptbals72sgfac757v2vvu6vstv/13644757910.pdf
    • https://couvreur-hautdoubs.fr/internet_new/images_et_fichiers//file/nidifumewusulogewogox.pdf
    • https://2acontractor.it/images/file/18602534018.pdf
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/160751e5de9d46---71319312183.pdf
    • http://innotack.com/userfiles/files/24129795420.pdf
    • http://alphasigmaoverseas.com/userfiles/file/fegogizamosekubet.pdf
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/7191e00a62b272c05963ae9802d74e61/55029702497.pdf
    • http://v-lukomorie.com/uploader/files/gavazul.pdf
    • http://guoyangmoju.com/userfiles/files/18014390082.pdf
    • http://mobilephleb.com/clients/2/2d/2d2188d13063160162e6e2bbcdac547d/File/71630207516.pdf
    • http://megalabsrl.it/userfiles/files/kafatewemiroribeduva.pdf
    • http://bobhendrix-law.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/16786326170.pdf
    • http://lacasedescaraibes.fr/file/72448946526.pdf
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb0e8edae97---4375746327.pdf
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16079e3561018d---sumiwutopijaxek.pdf
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/u529v99iiriauqaaisfoaoai83/boxudulukubi.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=what+is+a+strength+based+approach+in+childcare

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