Malicious PDF — malware analysis report

Static analysis result for SHA-256 4455ad9286432900…

MALICIOUS

PDF

72.9 KB Created: 2022-04-08 20:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 77fecfe747a46c219d81a34cc6fcaf3c SHA-1: bda43f6620e21c75e1fa8ba8a7c2febae5c3841d SHA-256: 4455ad9286432900d2a52b85c692b74ff9438be70545240138567ed471f6ace6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous external URIs pointing to disposable hosting, indicating a link farm designed to redirect users. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, identifying it as a non-clustered link farm on disposable hosting. While no scripts were explicitly extracted, the nature of the embedded URIs suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://wirut.co.za/YmrXLWy8?keyword=wilson%20rockwell%20hardness%20tester%20manual PDF link annotation
    • https://kesudebakofefev.weebly.com/uploads/1/4/1/2/141278938/8416061.pdfIn PDF document text
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/23837166761.pdfIn PDF document text
    • http://jiendurancecoaching.com/ckfinder/userfiles/files/ginem.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1623d80da63400---56475251317.pdfIn PDF document text
    • http://chanakol.com/ckfinder/userfiles/files/tefiwew.pdfIn PDF document text
    • https://kerawitoges.weebly.com/uploads/1/3/4/8/134878251/6672714.pdfIn PDF document text
    • https://lojopozubog.weebly.com/uploads/1/3/1/6/131606756/goduzonez.pdfIn PDF document text
    • https://sixupotivene.weebly.com/uploads/1/3/4/3/134305687/f553ec6a.pdfIn PDF document text
    • https://www.ibbfvhn.org/recursos/kcfinder/upload/files/dukevugogamon.pdfIn PDF document text
    • http://comercialardevolana.net/admin/kcfinder/upload/files/zilusejonofojomow.pdfIn PDF document text
    • https://xusikezawijuxop.weebly.com/uploads/1/3/1/4/131407227/9069651.pdfIn PDF document text
    • https://simamofot.weebly.com/uploads/1/3/3/9/133997368/4605348.pdfIn PDF document text
    • https://lengthening-sldf.com/userfiles/file/tibagiwofa.pdfIn PDF document text
    • http://4998horo.gmmwireless.com/contents/files/17905391622.pdfIn PDF document text
    • https://sosanibizug.weebly.com/uploads/1/3/2/6/132695556/96ca48.pdfIn PDF document text
    • https://burabusuzu.weebly.com/uploads/1/3/4/6/134649623/lijonewojenoso-daranogu-xadevanurem.pdfIn PDF document text
    • http://hcstonetw.com/uploads/files/202202200212398341.pdfIn PDF document text
    • https://tovepeluzon.weebly.com/uploads/1/3/4/3/134385389/4a0164e.pdfIn PDF document text
    • https://umutfm.com/resimler/files/mitugiwazebenavivez.pdfIn PDF document text
    • https://shinaltd.ru/images/file/xipepoguvolulijuderaguse.pdfIn PDF document text
    • https://en.unecol.com/uploads/kcfinder/upload/files/tomezizilij.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_off0000b933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB933 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d14a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD14A 10904 bytes
SHA-256: c105491fb83401b9ef4a8d48818dc2d95e6631fe7ee4af88986161840fcb8270
font_02_sfnt_off0000ea62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA62 17052 bytes
SHA-256: c1eaf15fc3d9ab97ca36c52c4bc7ee0b4705bc3fef39a841fa155fb12c60e097

Open this report in the interactive analyzer, or submit your own file for analysis.