Malicious PDF — malware analysis report

Static analysis result for SHA-256 78295c2984b46fa7…

MALICIOUS

PDF

86.9 KB Created: 2021-11-06 10:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 4b984c9e6c5c8f4d42cab9be8e5bd7b8 SHA-1: a055e9cc259b986042ddb13739ce6d60cd777f12 SHA-256: 78295c2984b46fa757f2b21eb86e2c46ce8a25d76dc6144e3bf9c8c25dbef155
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

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://laborke.ru/uplcv?utm_term=gfr+can+be+best+estimated+by PDF link annotation
    • http://stoka-saarlouis.de/userfiles/file/74177193921.pdfIn PDF document text
    • https://micsys.in/userfiles/file/55681410728.pdfIn PDF document text
    • https://b7b.reviewz.eu/app/webroot/files/userfiles/files/60722570742.pdfIn PDF document text
    • http://l-max.ru/userfiles/file/vekasimovakexotifipite.pdfIn PDF document text
    • http://ongxoanhdpe.vn/upload/files/vosukun.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/74d12c43808d096989d8fd08301ace33/nadix.pdfIn PDF document text
    • http://equipociclistaugeraga.com/ciclistas/userfiles/file/62228673329.pdfIn PDF document text
    • https://eurochen.com/UpFiles/WebEditorFiles/file/lekegobipopikutakatiwe.pdfIn PDF document text
    • http://ecovn.vn/uploads/news_file/romugegip.pdfIn PDF document text
    • http://shengnabei.com/uploadfile/file///2021110606302779.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617a7da771fa7---parizozelude.pdfIn PDF document text
    • https://olterus.org/contents/files/47543682134.pdfIn PDF document text
    • http://premiumdrinks.eu/userfiles/rasupima.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/msp3gv6nqo1jksup5nbmc57nkc/segodarofizefejemikok.pdfIn PDF document text
    • http://tumwebthailand.com/ckfinder/userfiles/files/92695539717.pdfIn PDF document text
    • http://vuadiemtayninh.com/hinhanh_fckeditor/file/25181565468.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/49029244211.pdfIn PDF document text
    • https://zzhqhi.com/d/files/kaxixasuvululizowu.pdfIn PDF document text
    • http://tugrabilgisayar.net/resimler/files/fizone.pdfIn PDF document text
    • http://malagi.pl/user-files/fck/file/kigure.pdfIn PDF document text
    • http://magic-mugs-factory.com/uploadfile/files/92974156340.pdfIn PDF document text
    • http://cwpni.com/userData/ebizro_board/file/rajiridebadunapavorebawer.pdfIn PDF document text
    • http://nguyenthaotech.com/upload/files/29317782082.pdfIn PDF document text
    • http://veszpremlizards.hu/_user/file/41610109511.pdfIn PDF document text
    • https://tinnituskozpont.hu/files/vekilowejukamojosobe.pdfIn PDF document text
    • http://paitoonbox.com/userfiles/files/tumasuribemamenilabone.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_off0000ee1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1F 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_01_sfnt_off00010540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10540 18436 bytes
SHA-256: 61ff253610710d4a10033277e0cb1c8c23bad410707ffb83005eda8aa6d34d18
font_02_sfnt_off00013519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13519 10764 bytes
SHA-256: fd6af956bb42e10dfb9f86939233f236a7d3137ba480931297488b9166414b70