Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dab7369db2f7eb…

MALICIOUS

PDF

76.8 KB Created: 2021-09-19 20:37:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: afe43a3cebafbb930685325bbfb46285 SHA-1: ca0da0975d51eca926388bf7a8f219c1b3fcbc1a SHA-256: c5dab7369db2f7ebb4d225473d52f08e4c5bca95dd7ded7fb202780412abbe7e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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://synerhu.ru/uplcv?utm_term=watch+doctor+stranger+free PDF link annotation
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/161303dd86b304---44786379943.pdfIn PDF document text
    • https://mystruggle.uk/indigo/ckfinder/userfiles/files/bodofebodedonaz.pdfIn PDF document text
    • http://96rangjai.com/userfiles/file/6621981526.pdfIn PDF document text
    • http://expertsystemgroup.com/file_media/file_image/file/xereke.pdfIn PDF document text
    • http://hk-sai.com/ckfinder/userfiles/files/kofulukejaxixoximu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141ee3a17da6---984743745.pdfIn PDF document text
    • https://thehideawayresortpattaya.com/userfiles/files/pizin.pdfIn PDF document text
    • http://francescasciortino.it/userfiles/files/48135704449.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161363487333c2---26466609166.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137a9d0587fd---99583035869.pdfIn PDF document text
    • http://ilksolar.com/Images/Media/files/80309530476.pdfIn PDF document text
    • http://playitdirect.ca/ckfinder/uploadfiles/files/gonisawugebisisun.pdfIn PDF document text
    • http://stainless-faucet.com/uploads/htmlupload/files/9388227274.pdfIn PDF document text
    • http://phukientubepxinh.info/gomsu/sanpham/anh/files/kenazuzikov.pdfIn PDF document text
    • https://afra24.com/basefile/afra24/files/tixavidotuko.pdfIn PDF document text
    • http://keralastatetailorsassociation.com/userfiles/file/34189975909.pdfIn PDF document text
    • https://erdemlerkoleji.com/resimler/files/wasagozepexezivubekoboded.pdfIn PDF document text
    • http://abwclayton.com/uploads/files/xezapapuxabebuzawexobej.pdfIn PDF document text
    • https://ww150004.linebot.net/upfile/files/20210910054853.pdfIn PDF document text
    • http://koreaseals.com/ckfinder/userfiles/files/72524999359.pdfIn PDF document text
    • http://wumag.pl/userfiles/file/falujugexuzogifapiwo.pdfIn PDF document text
    • https://foundationkuzmanov.com/files/78619535039.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/49386548825.pdfIn PDF document text
    • http://tid.vn/upload/files/70729864330.pdfIn PDF document text
    • https://keongracun.org/contents/files/15313154676.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_off0000c905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC905 10608 bytes
SHA-256: 501e45a79df7eca32f1c90f33289215ee54e2f6c1f7766b51f0a17e53504b530
font_01_sfnt_off0000e114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE114 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF926 17212 bytes
SHA-256: 1bafb02334739de921f56291ff97e38c41d3fb58fb99f3aa2cc401c7d0058159