Malicious PDF — malware analysis report

Static analysis result for SHA-256 2de5e429856a8900…

MALICIOUS

PDF

85.4 KB Created: 2021-04-03 12:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9489f5449e63f8e12b3d0d663b02945f SHA-1: d47854a85025836e00d38ad0b117ff0c646496d8 SHA-256: 2de5e429856a8900ecb70eea105205c851cbc36275c23d2ee515b027a71aa28a
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to disposable domains and appear to be part of a link farm. The document's content, though heavily obfuscated, suggests a lure related to educational materials. The presence of numerous external links, including one to 'botokaw.ru', indicates an attempt to redirect the user to potentially malicious content, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself is being used to host and distribute these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/wix?keyword=weathering+of+different+rocks+gizmo+answer+key PDF link annotation
    • http://dfwshootersupply.com/wovukatory.pdfIn PDF document text
    • http://alex-chekalev.com/zoluseruswm2m.pdfIn PDF document text
    • https://cdn.sqhk.co/jezumasulej/hcLjaia/nexudarewomixetikot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421939/normal_6017b0d52af51.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/gugumemojelujojonimezegoqez3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_60209c57119c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365584/normal_60066c28e9db7.pdfIn PDF document text
    • http://sutovuresas.mygamesonline.org/bridges_in_mathematics_grade_3_home_connections_answer_key.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376382/normal_60386746177f0.pdfIn PDF document text
    • https://cdn.sqhk.co/wapogade/bghgdpn/homeostasis_adalah.pdfIn PDF document text
    • http://dle-tpl.site/jarajofodixpkp3y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411701/normal_5fd8555cb55a8.pdfIn PDF document text
    • http://noxaduva.mypressonline.com/better_man_tab.pdfIn PDF document text
    • http://detonic-official.website/83796152435bi42h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415767/normal_606351fdcd701.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414680/normal_605f2a898836f.pdfIn PDF document text
    • http://biwedujurar.mywebcommunity.org/murders_on_the_rue_morgue.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/EicgfQQ/fuxewilatejupabolikorog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422918/normal_5fe83dd9d14e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484993/normal_60118ca4d2c9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466370/normal_603ea087c2a3f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://45884d5c-3037-4093-99f9-9b9c28a1e9f0.filesusr.com/ugd/3721b1_6618a50737354ca58368a0e8158db777.pdf?index=trueIn PDF document text
    • https://fa886832-b9e3-4ce5-a98c-97da2614721f.filesusr.com/ugd/9f8050_7f78412ca2134a16990ed25a775b9e20.pdf?index=trueIn 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://scripts.sil.org/OFLIn 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_off0000f94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94B 5724 bytes
SHA-256: 21f2afb7d9076494e62fee530fed5fd62ab1b082aa3a86d11187e5e1288bec52
font_01_sfnt_off00010ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CCB 10816 bytes
SHA-256: 16fcb78276836a897e15894742c48de20b5e19715897937997175c8c7d072273
font_02_sfnt_off000131fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131FB 16144 bytes
SHA-256: c5b81f703ebddc697e6824868dcd306aba919aa4c1ec28f594a83a04df97872b