Malicious PDF — malware analysis report

Static analysis result for SHA-256 8205f27a2212f566…

MALICIOUS

PDF

63.7 KB Created: 2021-05-05 04:24:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 164cb57df7fce63920420b9693caa5e8 SHA-1: 5c247325f3539f1385c13e82aa5be19205829cfe SHA-256: 8205f27a2212f566882c21abcf2256110808d4c748265b3b3431f74d68b07b56
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised websites, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The document body is heavily obfuscated and unreadable, providing no direct user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8701

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://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/0ef542c6e249c7270f8ea9286a9bf7b7/gupuwagawebovefopujilerov.pdf
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160829a1e9abd2---dagonatib.pdf
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/3749b540c7f8c2ecbacaa21eb4334085/nagixonuvirelu.pdf
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/e6a7e8cba277c5820556480a6ee5c3d7/liputuv.pdf
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/66bf4f104a3df63d596103c3fd4bb1a4/82550972702.pdf
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/83ov1mo0nqhvs0a9v1gu39abq7/wodux.pdf
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16075d04613a1e---molusep.pdf
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d7cf2156f9---pilenuwejilotugedukol.pdf
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/0qt3l0gs6gqfiv972gh32st327/verobinovedusetiwiremo.pdf
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077facc048ad---40079885119.pdf
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/3e30f7ed95c558af46ca049f43a83895/24057529407.pdf
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160839818826ff---56686717889.pdf
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/b17af0a29a5db96f21a56ce8b50fcfed/73121145763.pdf
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/d2o3j8qarao3i823englo4qkc6/tumigobugegavirudupud.pdf
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/533d646432190e098695814476a36907/mepowigenekuzamuvawi.pdf
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/aa5cd420a77baef3c6f3678c9ffabb11/jogasovodupabima.pdf
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607437b8d0c54---zodikopumodivanisiwin.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=caffeine+software+free++for+windows
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5c2.bin
4c82ccb67663898cec9388229fffedd49f82175dc2b300d04d798e0323571cb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C2 4772 bytes

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