Malicious PDF — malware analysis report

Static analysis result for SHA-256 d40cad12c23f56e3…

MALICIOUS

PDF

76.3 KB Created: 2021-02-27 07:04:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f7f012c5bed0405828a9e8e6835b70ef SHA-1: bc3ba42f4a6de574a0eec828c51cf3ce52de327d SHA-256: d40cad12c23f56e3f069a9d39a34533cd0f72219dd6fe9a889275e51e1c8487e
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with at least one pointing to a domain flagged as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9765

Heuristics 4

  • 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
  • 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://dugedepap.ru/award?keyword=introduction+to+react+js+ppt PDF link annotation
    • http://dadefuxafovub.22web.org/guidelines_meaning_in_tamil_language.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444649/normal_602ed391a6379.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378628/normal_60075a7e39319.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://setavafajo.epizy.com/xolozaxonenilima.pdfIn PDF document text
    • http://zukixewagiv.epizy.com/totally_accurate_battle_simulator_unit_guide.pdfIn PDF document text
    • http://vafopowagaguki.rf.gd/formato_de_nomina_2019_colombia.pdfIn PDF document text
    • http://dorizoki.rf.gd/abacus_alarm_installation_manual.pdfIn PDF document text
    • http://vowefaxi.epizy.com/boeing_737-_200_specifications.pdfIn PDF document text
    • http://tevufojetuxovud.rf.gd/libro_caballo_de_troya_3.pdfIn PDF document text
    • http://futikuzita.onlinewebshop.net/how_to_connect_epson_artisan_1430_to_wifi.pdfIn PDF document text
    • http://meguwuzib.rf.gd/badajunibumu.pdfIn PDF document text
    • http://gevuragerok.epizy.com/79905664293.pdfIn PDF document text
    • http://kavibajegis.onlinewebshop.net/duguke.pdfIn PDF document text
    • http://timodetunidup.epizy.com/6210853835.pdfIn PDF document text
    • http://fukutinupamebo.rf.gd/concur_expense_reporting_sign_in.pdfIn PDF document text
    • http://sabozet.epizy.com/cypress_weather_snow_report.pdfIn PDF document text
    • http://sulovibox.epizy.com/canandaigua_lake_fishing_guides.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010fb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB8 5048 bytes
SHA-256: acd5c001242941c49f3159f947e4f8cb760283fb15c75eee9effd4897080be0f

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