Malicious PDF — malware analysis report

Static analysis result for SHA-256 425f5b47e1721652…

MALICIOUS

PDF

72.7 KB Created: 2022-04-07 18:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: f53a70be6c75115499df667f14425788 SHA-1: 7aa2505054560a0d9623120e3d795f56b1c49946 SHA-256: 425f5b47e1721652fa7725fa5edc661e082c31dc4e7a7d5bd560af4c1e5090cd
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external links, many pointing to disposable domains, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery via the embedded JavaScript and external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 8

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ragaz.co.za/YmrXLWy8?keyword=what%20is%20the%20newest%20accu%20chek%20meter PDF link annotation
    • http://conflictfreeelectronics.com/ourprojects/chowki/UserFiles/renuka/file/87319947664.pdfIn PDF document text
    • https://wurotifaji.weebly.com/uploads/1/3/4/3/134315076/gizesoniridudi.pdfIn PDF document text
    • https://mifevaxa.weebly.com/uploads/1/3/4/3/134360436/tadem_pevitisorewopi_gipuzose_puwof.pdfIn PDF document text
    • https://sunivisoxeban.weebly.com/uploads/1/3/4/4/134493344/pejeledojesok.pdfIn PDF document text
    • http://wxdyzs.com/userfiles/files/15024760657.pdfIn PDF document text
    • https://www.quartzlock.com/userfiles/files/dikufu.pdfIn PDF document text
    • http://bayanairag.com/uploads/userfiles/files/15788635186.pdfIn PDF document text
    • http://thaicockstar.com/ckfinder/userfiles/files/novegokinitaromotexesi.pdfIn PDF document text
    • https://kirobobu.weebly.com/uploads/1/3/4/5/134593563/tufutux_petalud_kexavesef.pdfIn PDF document text
    • http://laskod.hu/userfiles/file/xofasalimewizuselitat.pdfIn PDF document text
    • https://jogamiskolc.hu/ckfinder/userfiles/files/nivesutosufesoladakenifob.pdfIn PDF document text
    • https://fsreloading.com/userfiles/files/64203722799.pdfIn PDF document text
    • https://sabagdasarov.ru/upload/file/46471863090.pdfIn PDF document text
    • https://basalulonow.weebly.com/uploads/1/3/4/6/134612360/sigitibebalot-rapazawejupoj.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20220318214826.pdfIn PDF document text
    • https://dakawowonogi.weebly.com/uploads/1/3/4/6/134663237/7468684.pdfIn PDF document text
    • http://nanchang.chinatupai.com/web/js/ckfinder/userfiles/files/surixexulepipeteriwa.pdfIn PDF document text
    • https://kokujilu.weebly.com/uploads/1/3/1/4/131453241/laxanebofojimunum.pdfIn PDF document text
    • https://mavakonagidesa.weebly.com/uploads/1/3/1/4/131483278/6558985ca.pdfIn PDF document text
    • https://nolilozeto.weebly.com/uploads/1/3/5/9/135957670/wuritova-bumagewepisukuv-xudezazofejoj.pdfIn PDF document text
    • https://somakala.weebly.com/uploads/1/3/1/4/131409557/mavoni.pdfIn PDF document text
    • http://worldwidestationeryholdings.com/files/file/98926467904.pdfIn PDF document text
    • https://daxokubazab.weebly.com/uploads/1/3/1/4/131406800/6177744.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_off0000b3c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3C7 10600 bytes
SHA-256: d33c6b62aa7a8d8e102fe07a1a3dfdc20a6ef7d2b3b855e557c449e09b9d3ba1
font_01_sfnt_off0000cbe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F2 18128 bytes
SHA-256: e672a6a1be759930a9c140d59810c0631720ad663e61d3662675fadfa6ac21dc