Malicious PDF — malware analysis report

Static analysis result for SHA-256 0182b6c83a07b8cf…

MALICIOUS

PDF

76.1 KB Created: 2022-04-08 12:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-08
MD5: 5f1100aad31bc9aebabd62cf1ef50fb1 SHA-1: 83e1b2021365f7efb13c11474590d0829e581321 SHA-256: 0182b6c83a07b8cf0f1a9c1554b131b7c190612d13c3c60a1ba63e40e19f269c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded URLs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. The document body presents a fake interface for selecting a birth date, which is a common lure for phishing attacks. The presence of many external links, including one to 'wirut.co.za', suggests it is part of a link farm designed to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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 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://begafirezudafo.weebly.com/uploads/1/3/1/4/131438667/76b8a.pdf In PDF document text
    • http://ceresasrl.it/userfiles/files/19134087466.pdfIn PDF document text
    • http://multimetrics.com/ckfinder/userfiles/files/pidanejebevalugiwojo.pdfIn PDF document text
    • https://alpinismbihor.ro/app/webroot/files/userfiles/files/2294862225.pdfIn PDF document text
    • https://littleedupark.com/ckfinder/userfiles/files/dowaxamuduwizarosinetogug.pdfIn PDF document text
    • http://cattaneoarchitetti.it/userfiles/files/buramowitetijuturuvuwimi.pdfIn PDF document text
    • http://nerezove-kuchyne.cz/UserFiles/File/45302926249.pdfIn PDF document text
    • http://peknanevesta.sk/media/file/75937116678.pdfIn PDF document text
    • http://wellcomm.co.id/assets/kcfinder/upload/files/50936046836.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/8lquipqnau1fproh1l8j9arcol/dezujematitoza.pdfIn PDF document text
    • https://mkontakt.pl/dat/file/xubexakow.pdfIn PDF document text
    • https://wedding-photos.cz/userfiles/file/mijisinomisowu.pdfIn PDF document text
    • http://vietlinktour.com/userfiles/file/12784870273.pdfIn PDF document text
    • https://unitedfightalliance.jordanadams.com/ckfinder/userfiles/files/vitilofevukawivoti.pdfIn PDF document text
    • http://bannhuaduong.net/upload/files/21795050998.pdfIn PDF document text
    • https://www.rapn.ru/ckfinder/userfiles/files/gomuvimepisijedoparor.pdfIn PDF document text
    • https://vojonabof.weebly.com/uploads/1/3/1/3/131383251/145e3.pdfIn PDF document text
    • https://degumikiw.weebly.com/uploads/1/3/4/7/134724061/cbea0180.pdfIn PDF document text
    • http://www.siposferenc.hu/html/58507372695.pdfIn PDF document text
    • https://mph.cz/upload/files/lozad.pdfIn PDF document text
    • http://cyclad.org/UserFiles/file/84550599948.pdfIn PDF document text
    • https://wirut.co.za/YmrXLWy8?keyword=dark%20souls%202%20release%20datePDF link annotation
    • https://ddtoyz.com/ckfinder/userfiles/files/nexivisevunuwanigur.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_off0000c805.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c805.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC805 10360 bytes
SHA-256: d44dea7f9bd34f5266231b3242da72dafe45eb73d115513945b6912e28d179db
font_01_sfnt_off0000dfa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA7 16776 bytes
SHA-256: e11dddf8af9cf998542a2163c43b574cd84935bbf08cf0b7eb9d9f06aff1a35e
font_02_sfnt_off00010b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1