Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dad7a14446066b8…

MALICIOUS

PDF

98.2 KB Created: 2021-06-30 08:13:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 27203ea730e0421bf493490d25ec8b46 SHA-1: 14185724774adf988cdd50cf0d729ff8e80aae0d SHA-256: 0dad7a14446066b8bcf1c69c2ab27e2d68818ceb504f7566ae7b3180837dbd35
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to compromised WordPress upload directories, indicating a link farm designed to host or distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

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://pet-fashion.ro/mm/file/54735416918.pdf In PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0fa901e242---48578806675.pdfIn PDF document text
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/7fb98b5678282749f549440821d0bbe7/tibafetiferot.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/11a874d2f44fc75c8e744ec4d3269099/sagedife.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d88169d3973---tixom.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607cdedfe0a68---52630042189.pdfIn PDF document text
    • http://aitrans.org/UploadFile/file/F1202105251627366494.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a6cb1c5d37f---sawazuxazumisupe.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16098261686f36---jotawifiwunitigomalowe.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/1dmstr6au7580tlcmkaqm48fkl/kabasuraz.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/g4eus8erjun5n6serqcb47cvqt/94021075471.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/5jqk952o6rd8vut46f9qsfjdkj/33171547739.pdfIn PDF document text
    • http://controldellaves.com/app/webroot/arxius/file/41685975225.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609a2d26a2f6c---89062460726.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094bd5a97d50---nukisademewen.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c6c772993---95972357764.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/q4kla45kgtsro0qoak8milikjg/56443739169.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/l7b23tqh70hv10ve4q1bbrt4ls/40204374660.pdfIn PDF document text
    • https://soechi.com/userfiles/file/64782804728.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160bd6b700d48d---xajajodam.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/3c8a269bb25db8605bfd70643973ad78/35902104966.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0afb0166d---19280349004.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/e85fff2c181faa2d8684d302861243e8/juzokelenejikuxunugob.pdfIn PDF document text
    • https://securitydm.com/slicice/file/watenilamozegipujuxeduza.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/45sn9lus23jo0jkmlj6dd4f628/67077123591.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=you+will+be+all+rightPDF 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_off0001144e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1144E 24880 bytes
SHA-256: 5f2abe6ec8c4b7b06e11c365e7b2459cbe90c668357187963d140a90e666127d
font_01_sfnt_off00014a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A4E 10424 bytes
SHA-256: 384f780213e0a7dfcc8211a98f23dda7ada3e07505a8b283118aaa1ff9e694a4
font_02_sfnt_off00016217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16217 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1