Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a84957289e933b0…

MALICIOUS

PDF

94.2 KB Created: 2021-07-03 11:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5850dfd8d3cb6f93a018b6ae50b61de8 SHA-1: 003b37ef265c00677367c3049a2b53a806c3983c SHA-256: 6a84957289e933b0ba80df3ad611d3e8a9d5c615fe7117a583a2e1c6870a0049
156 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier. Heuristics indicate it functions as a link farm, pointing to multiple compromised CMS upload directories. These links are likely intended to host phishing pages or further malware, disguised as legitimate files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9806

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://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab87be3807d---xoxakowezigazigenaluwamo.pdf In PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1606f64bb42c41---79537625017.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/gejatag.pdfIn PDF document text
    • https://tavio.ru/files/file/xiwiwemarejepukowulefiv.pdfIn PDF document text
    • https://susta.vn/userfiles/file/sujinivibuxapagafup.pdfIn PDF document text
    • http://aklond.com/UploadFilesfile///2021042908491834.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/96299fa7c03c0ddd678d3fb2d12c2bc9/ketukerekuganam.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/57500479819.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/16097816f4df63---nidupojokovexitesajuv.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/5f0767dd3d3e1807ebe9455cbb75afca/17945481369.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/20759106826.pdfIn PDF document text
    • http://www.amedna.com/userfiles/files/dujejodovazotusafoxolorev.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608871b9cc1d3---13162903046.pdfIn PDF document text
    • http://otelm4b.ru/admin/ckfinder/userfiles/files/medezizofevofez.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/3e8fojglhhoqti2t4tr2j7ks3o/siganalasoxinanabojelo.pdfIn PDF document text
    • http://mosvag.ru/img/lib/file/tuxotosuwefuxujapesil.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/de8572d8c469c1f5ddde370d0216e300/zowabowufepevapakal.pdfIn PDF document text
    • https://pichsas.com/file/74732983030.pdfIn PDF document text
    • http://www.nomorcantikjoss.com/file/40212296755.pdfIn PDF document text
    • http://idealhca.com/admin/images/file/41149115304.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/xapasubimow.pdfIn PDF document text
    • http://gvs-russia.ru/admin/ckfinder/userfiles/files/xivarekupola.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160c2fa073dee6---71634225690.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0bee5192b---32031064388.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607731770240e---79137686182.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/4kfjssm5ivk6t36ie1v6r91k78/nafok.pdfIn PDF document text
    • http://jcbcharpentebois.com/ressource/site-image/files/18511193872.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=solve+for+radius+of+a+circlePDF 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_off00010948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10948 10508 bytes
SHA-256: 62108de42b5078c51c26967b90d7a36df0efc907610e35d76bb9601154b82712
font_01_sfnt_off00012150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12150 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13962 19128 bytes
SHA-256: 44281f631a3a8b8a0214b0444ca6d178a6152a65ead69ea05138c005ef94cdf6