Malicious PDF — malware analysis report

Static analysis result for SHA-256 afac472ffaac1999…

MALICIOUS

PDF

58.2 KB Created: 2021-09-07 11:02:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b37a27cbb220d7bc4e3a4fabf9f43158 SHA-1: 164394ff121daf95aea938d05bc275ca5e370ffb SHA-256: afac472ffaac19993e24d581f9186d4ccfc91c771e651f949186039484ffd69a
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on compromised CMS platforms, suggesting a phishing or malicious redirection attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to lure users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6378

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://dchs1961.com/clients/871949/File/69752544991.pdf In PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/1f379a369363285c3cf30565984a68ba/xigagajenun.pdfIn PDF document text
    • https://pepinieramontana.ro/ckfinder/userfiles/files/59097912767.pdfIn PDF document text
    • http://shopgraeagle.com/ckeditor/uploads/files/piwizezupuveribuk.pdfIn PDF document text
    • https://agatanorek.com/files/file/97678818156.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/prhb3op1181uqn0qh8cpievgv6/wobon.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/fcjnks9r4rlucsu161aq16d961/tofafeparuxoxejaw.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160a1794b83ee5---guxojeditudaj.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/visfu9jhddn466upn629k2hbik/84369852736.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/1e2f270c83876cf2860cbd9d1eed24f4/lagirimosabiwe.pdfIn PDF document text
    • https://nikoljski.com/ckfinder/userfiles/files/59814187811.pdfIn PDF document text
    • http://lnv-cnc.com/userfiles/file/81450041993.pdfIn PDF document text
    • http://megatex-plast.ru/pub/file/zubofuni.pdfIn PDF document text
    • https://energiadirect.pl/application/resources/ckfinder/userfiles/files/begose.pdfIn PDF document text
    • https://schmitz.cz/res/file/53380115189.pdfIn PDF document text
    • http://szkolaprzybranowo.pl/ckfinder/userfiles/files/xegafezalixevokutetogis.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/ad897b7bb39593dc61099ce2c737cce2/81456825773.pdfIn PDF document text
    • http://www.nomorcantikjoss.com/file/1924880729.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076c260a46d6---xofufiwezorowinu.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/a5b9cd87a3c5e6f60fe90be5ca585e38/49004718553.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/67d8a10f028e490d027a22851d133af7/91857409326.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16071d52900aba---48045699848.pdfIn PDF document text
    • https://woodfur.in/userfiles/file/58182991703.pdfIn PDF document text
    • http://bidadapatidar.com/userfiles/file/vujonikaxarulog.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16077f42549bc3---45089089321.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088e01bf39c2---5659779651.pdfIn PDF document text
    • http://scandirent-new.ru/uploads/assets/file/14479986928.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=evidence+law+pdf+nounPDF link annotation
    • 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_off0000cbe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1