Malicious PDF — malware analysis report

Static analysis result for SHA-256 f57727408a23b216…

MALICIOUS

PDF

97.9 KB Created: 2021-07-27 08:31:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: 5df2d7ebb74a6d8d469158783de1c4ef SHA-1: 1cf47e99bdc974d0abd0db622f8cb104a631ad10 SHA-256: f57727408a23b21676a3dc547f5747431f4a8d11fbc8bbe7848285c167918c85
156 Risk Score

Malware Insights

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

The PDF contains numerous URLs pointing to compromised WordPress sites and disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/186736ea291421a9e703c761d8ef0f63/tilemavefexixup.pdf In PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/0d143e963906dc50d3a75d752902b158/94640407241.pdfIn PDF document text
    • https://gagiongvitgiong.com/ckfinder/userfiles/files/tuzipalowigekajek.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/656927e9525ffc37bb4b04fa5d0c0fea/jitaxuxurovagodar.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/pirawavezonafovu.pdfIn PDF document text
    • http://j-line.ca/fck_upload/file/73547447633.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2ab49c0f0---jepogatunorefupujage.pdfIn PDF document text
    • http://rasciindia.com/firetech/ckupload/files/15162199115.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/8b6fb668cea57eae2c986f008c9aab8b/15291156084.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/5b0de01e5c89e301eff43d168e3c6776/wedelato.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/262945690d3ceb6a6911d9d703ded036/55700966475.pdfIn PDF document text
    • http://moonlightmontessori.com/upload/files/2083507182.pdfIn PDF document text
    • https://betenagro.com/sites/default/files/file/31572099887.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/92989591417.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160839be28eb79---69861171052.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2f6e24220---duzegoxed.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/301456b483843b4eded1c428f1241af8/suduxofiri.pdfIn PDF document text
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/ejvs1bj13lqdpvhijrl0ktkmet/28715187948.pdfIn PDF document text
    • http://au-zlato.sk/upload/files/bawil.pdfIn PDF document text
    • https://readandenjoy.ae/userfiles/files/78327369205.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/0686dec4ef1db4741f57ed99c8122834/62719327615.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=clothes+prendas+de+vestir+en+ingles+para+colorearPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11670 18792 bytes
SHA-256: 80123cacaa81a4cdbcc249c571fa71163925d5796e06f9e378dfea8423545203
font_01_sfnt_off000146cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146CC 10892 bytes
SHA-256: d3c92605503b28439668381f58766b4ae772858aa20da3d17068648b5db3aadf
font_02_sfnt_off00015fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FCF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.