Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2631404dd6e784…

MALICIOUS

PDF

72.9 KB Created: 2021-12-10 23:51:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: e160b1a0c0107ee1d664c62244413c67 SHA-1: 975b1d7d4e132eca1735a9f2c6a4ac68cf371922 SHA-256: af2631404dd6e7847a3c44b0a7c966e65986e70bb06f90fa0315fc395199d925
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://crewmak.ru/uplcv?utm_term=dbt+worksheets+for+emotional+regulation PDF link annotation
    • https://vientangluc.com/upload/files/88008298072.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7adbbef9f---sakobidivininubaluruka.pdfIn PDF document text
    • https://gizaviation.com/uploads/files/meganexodumije.pdfIn PDF document text
    • https://extractos.assaludips.com/Proyectos_PHP/gestor/images/file/gozejidukok.pdfIn PDF document text
    • http://thietbimaugiao.vn/Images_upload/files/59288989855.pdfIn PDF document text
    • http://strandedtattoo.com/file/balemawudo.pdfIn PDF document text
    • https://sambelteri.com/contents/files/gomel.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/sikitudufoxexufejagijumi.pdfIn PDF document text
    • https://ratsimae.ee/media/contents/file/31671241496.pdfIn PDF document text
    • http://dansecyr.ca/pdf/file/50857770263.pdfIn PDF document text
    • http://dxqzx.com/ckfinder/userfiles/files/20211210_011428.pdfIn PDF document text
    • https://handbill.hk/editor_upload/file/nalaxolak.pdfIn PDF document text
    • http://bibliotekaludwin.pl/img/upload/files/dowewutizadodelukulapoma.pdfIn PDF document text
    • http://navigator-nsk.ru/userfiles/file/dasan.pdfIn PDF document text
    • http://gzlmjx.com/data/home/bxu2343160066/htdocs/uploadfile/files/bumotofenusujones.pdfIn PDF document text
    • https://fiberglasssupplydepot.com/userfiles/file/vurupuzuzewomuzena.pdfIn PDF document text
    • http://eptesteplelek.com/uploads/file/mirudedaviroruv.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615f0e7aaf7a8---dasizimezuvirewipixij.pdfIn PDF document text
    • http://greenworx.eu/images/uploads/files/65206221769.pdfIn PDF document text
    • http://alacarte-grafik.de/userfiles/file/92898697306.pdfIn PDF document text
    • http://vigen12.com/userfiles/file/zowuxidezisinupevavegoma.pdfIn PDF document text
    • http://mobil-tech.com/files/felebetagim.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619fd5dc815ec---ridobadubede.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 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_off0000b12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB12B 19836 bytes
SHA-256: e07cafdd6112d6a75adc61e2081d71fd83c085e00ad094d00e6963d6eb70c2db
font_01_sfnt_off0000e3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E7 11080 bytes
SHA-256: eb3e16405460587b201774c2213abbb740778085d6b9efb9ba8e66a6d2884e2e
font_02_sfnt_off0000fda9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA9 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336