Malicious PDF — malware analysis report

Static analysis result for SHA-256 08c5da079c45860c…

MALICIOUS

PDF

125.0 KB Created: 2021-09-03 19:08:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 02208b0c54ba2a528cf5f47a94a95290 SHA-1: 40c1b3f85f83e9237174678e28b34c527d769eed SHA-256: 08c5da079c45860c496aef57319fef372b228d5527b98f22a4bca52c5c2b0998
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, directing users to multiple compromised WordPress sites and other disposable hosting domains. The embedded URLs suggest an attempt to lure users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6608

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 http://ackerviewguesthouse.com/userfiles/file/29087330242.pdf In PDF document text
    • http://moscow-vernisage.com/files/files/74307895534.pdfIn PDF document text
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/7e70d0d885c9d1b87c8e56124ab18d17/todubimisipanaje.pdfIn PDF document text
    • https://tsegypt.com/file/11135238621.pdfIn PDF document text
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/8cb5605c2c731563c98958ebc7525e45/wunazopuwajulelim.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/d79e6d31fec97020f53ac41774202b51/71415757535.pdfIn PDF document text
    • http://mousike.it/img_ins/files/70437748190.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5ce235376---ruwotuwalelosu.pdfIn PDF document text
    • http://fobas.cz/userfiles/file/5018039319.pdfIn PDF document text
    • http://scoutpate.com/userfiles/file/duxafurixefelepobudi.pdfIn PDF document text
    • http://greenld.com/userfiles/51804419211.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/bac2d9cf08036017be42f4fbdefb6ae2/68550327061.pdfIn PDF document text
    • http://bbmpva.nl/fckassets/file/lajadepepuwasu.pdfIn PDF document text
    • http://stitesattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bevaxovavezaxaxowusesular.pdfIn PDF document text
    • http://cgpreceptor.com/ckfinder/userfiles/files/94743484705.pdfIn PDF document text
    • http://w.scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/15017408869.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/3s2n9d0kkf6sraokq25hmv70q1/25113675124.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/afbc1c168c71e84ab70ddb1b3a56d33a/goxanerupejuleromese.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/wowovipasu.pdfIn PDF document text
    • http://55thocscompany.com/clients/62662/File/bosigixekemorugi.pdfIn PDF document text
    • http://bjerkelunden.org/content/files/userfiles/file///meranuxiporodunejerad.pdfIn PDF document text
    • http://songiadahoaian.com/upload/ck/files/40158354807.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c12c96ed82b---73649512817.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/53229568799.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=caterpillar+diesel+generator+manualPDF link annotation
    • http://s292376414.onlinehome.fr/datas/imgmail/file/81563352791.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001d625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D625 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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