Malicious PDF — malware analysis report

Static analysis result for SHA-256 48db79d6d8cc591a…

MALICIOUS

PDF

91.4 KB Created: 2021-08-15 16:10:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: 34970d34a634732d408748acd941242d SHA-1: fd0693b64762ec1921eec46faf94567c36b5a79f SHA-256: 48db79d6d8cc591a693b1b9736aab9a43673d34f3afa9d6831ba31e3811b00fb
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://krisoc.ru/uplcv?utm_term=dr.jart+porecting+solution+bubbling+charcoal+sheet+mask+review PDF link annotation
    • https://thefertilizergranulator.com/d/files/5571589548.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/pernfm3hn6vd9puhqpjckqoquh/felorosakusub.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b03b242892f---51268068781.pdfIn PDF document text
    • https://perfecthospitals.com/FCKeditor/file/powovexifoxula.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/ns0e9r9eiu09outeh4eqqoaglj/fudoniwovifir.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611805354691e---9593246488.pdfIn PDF document text
    • http://aumnat2car.com/ckfinder/core/connector/php/upload/files/retugabo.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd6397b299---71385986095.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/9r3dokv09b8hugi33mj7dc9ai7/67240175208.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/ludikuxusimab.pdfIn PDF document text
    • http://fzcce.com/aimgs/uload/files/33943248500.pdfIn PDF document text
    • http://abwlargo.com/uploads/files/dakupi.pdfIn PDF document text
    • http://sibmetiz.ru/upload_picture/fosozonusujetaxirela.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/83513370352.pdfIn PDF document text
    • https://deshpanday.com/ckfinder/userfiles/files/56052252339.pdfIn PDF document text
    • https://mszukam.pl/dat//file/66943352616.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608d0c1cba821---subumopinoxufewekoreso.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/vkme4eedbmi4lasvtvfr6bihbb/fimekador.pdfIn PDF document text
    • https://www.haievent.com/wp-content/plugins/super-forms/uploads/php/files/uld20mgudegme2mp8sasf6lh7s/tatiku.pdfIn PDF document text
    • http://stasta.com/userfiles/file/dosedixodiwivekuvup.pdfIn PDF document text
    • http://asianaccounting.com/admin/fckeditor/userfiles/file/3441775049.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082bb3001eac---26859857578.pdfIn PDF document text
    • https://mimpishiodua.com/contents//files/58616647063.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160818e9a67b91---58873426101.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/norewejotipusazoviver.pdfIn PDF document text
    • 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 extracted file (font_00_sfnt_off0000f15e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000f15e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15E 21240 bytes
SHA-256: ac0f37a9882f2401f56f23ccea67fb10cb62b05a2ecbeffae686c48c06c22373
font_01_sfnt_off0001279b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1279B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FB2 11504 bytes
SHA-256: 435e2bd998599f90e812eb04ba92be60a783a1472c987a2cd4f3a39b95176887