Malicious PDF — malware analysis report

Static analysis result for SHA-256 445804501ba56b92…

MALICIOUS

PDF

77.9 KB Created: 2022-04-13 01:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 3e15fdcdf8ae2a9c38f83a2045496c85 SHA-1: addae32304d22c419b71ec438fff6b3039b22f8f SHA-256: 445804501ba56b92c9b3704f8fa8a2dc080b0a3131100c2346c21b359bfaa981
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of external links, indicating it functions as a link farm. The heuristic 'PDF_SEO_LINK_FARM' and the presence of 31 URLs strongly suggest this behavior. While no specific script was extracted, the nature of the links and the ClamAV detection as 'Pdf.Phishing.Trojan' point towards a malicious intent, likely to lure users to malicious sites or for SEO manipulation. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lovig.co.za/YmrXLWy8?keyword=why%20dryer%20not%20drying%20clothes PDF link annotation
    • http://yeke.com.tr/public/kcfinder/upload/files/bijaxiduxasabeve.pdfIn PDF document text
    • https://hkfew.org.hk/ckfinder/userfiles/files/55709729897.pdfIn PDF document text
    • https://www.starvisaservices.co.uk/application/elements/plugins/kcfinder/upload/files/debudusata.pdfIn PDF document text
    • https://fufigejopugip.weebly.com/uploads/1/3/1/0/131070204/e2fa6c2f53ca77d.pdfIn PDF document text
    • https://3zslitomysl.cz/admin/editor/kcfinder/upload/files/16674400117.pdfIn PDF document text
    • https://bunikesetula.weebly.com/uploads/1/3/0/7/130739723/xeferenu.pdfIn PDF document text
    • https://lozoveku.weebly.com/uploads/1/3/1/4/131438804/sudulopiziv-jeles-setamit-xamizekovosag.pdfIn PDF document text
    • https://bipewajebij.weebly.com/uploads/1/3/2/7/132740639/742cbc5af2b.pdfIn PDF document text
    • http://maginsaatmetal.com/resimlerfiles/34228648140.pdfIn PDF document text
    • https://leluwimatuw.weebly.com/uploads/1/3/0/9/130969986/kogitozuke.pdfIn PDF document text
    • https://camelcarpet.org/d/files/34783769207.pdfIn PDF document text
    • http://citlak.de/admin/UserFiles/file/kibuf.pdfIn PDF document text
    • https://xizirasifeda.weebly.com/uploads/1/3/4/3/134344010/tevaxuses.pdfIn PDF document text
    • http://ebiddex.com/kcfinder/upload/files/moxivilumetuwori.pdfIn PDF document text
    • http://veterinariomauracotti.it/userfiles/files/15575701562.pdfIn PDF document text
    • https://luvupomadimudux.weebly.com/uploads/1/3/4/3/134350134/2430364.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/11004246cc3aec3c86290fdccfeee6b2/28257326079.pdfIn PDF document text
    • https://abicecream.ru/ckfinder/userfiles/files/38533569720.pdfIn PDF document text
    • http://surtek.biz/image/files/20150925_080101.pdfIn PDF document text
    • https://2sisaccount.com/userfiles/files/55272184337.pdfIn PDF document text
    • http://fcraregistration.com/UploadedData/file/wuzewis.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/4bkuvavc7tgub9351erq9kt9th/7408327041.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_off0000ceae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e6c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C0 16432 bytes
SHA-256: f12ce87e7c8378814db3752d868a4f16a3b49b73930f67f06a5bd37bfdd22103
font_02_sfnt_off00011131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11131 10596 bytes
SHA-256: cba77d3b17f0092a6688f73cf55febab190bb605c1e21531ddf5a70a21f41b09