Malicious PDF — malware analysis report

Static analysis result for SHA-256 3480bd9883424168…

MALICIOUS

PDF

75.2 KB Created: 2021-03-05 01:25:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1ba8f965514f7bc84d05bd7d550416d1 SHA-1: ba3482d6158d99091060f206d855c7778e06be42 SHA-256: 3480bd98834241681d5fa756d74bf4f9f88ef88a192b556eed39a8427c4c82f9
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URI points to a suspicious domain, likely used for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/award?keyword=windows+keyboard+shortcuts+screenshot PDF link annotation
    • http://rukozhop-guide.com/what_does_error_99_mean_on_ebayqem5w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392647/normal_5ff65e6f472e6.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/el_lazarillo_de_tormes.pdfIn PDF document text
    • http://supernefritroller.xyz/jamorowij2x0qm.pdfIn PDF document text
    • http://uspehdnyaaxyz.xyz/57485123682lvrzr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458137/normal_5fd9c445ef891.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392877/normal_5fc7121eb8c31.pdfIn PDF document text
    • https://cdn.sqhk.co/dasewugiru/3G0ielT/uncertainty_definition_environmental_science.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/jeihKij/nipejuregoweweduwiva.pdfIn PDF document text
    • http://munasimowijuxi.getenjoyment.net/27632527247.pdfIn PDF document text
    • http://nanebaxexob.getenjoyment.net/taveripivolumowobexuminiv.pdfIn PDF document text
    • https://cdn.sqhk.co/lilavokolet/ZDjB7ib/sedevikorugapubidenufuzu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385011/normal_5fed7b2838718.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/Dnzagdl/25747136171.pdfIn PDF document text
    • https://cdn.sqhk.co/letareximo/hcggXgi/sonic_4_episode_1_ipa.pdfIn PDF document text
    • http://tekplafond.xyz/217450105239vea4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xomepixo/ronigafunuwif.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/vegas_pro_14_free_full.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/radio_call_signs_alphabet.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/gatling_performance_tutorial.pdfIn PDF document text
    • http://xafonabikox.rf.gd/rivm_nationaal_vergiftigingen_informatie_centrum.pdfIn PDF document text
    • http://wekopedeziro.epizy.com/38398169773.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE931 5408 bytes
SHA-256: 28855b1a1bb86e4eea55629ca9281831e655beb35cdd86850e321893310332e9
font_01_sfnt_off0000fbae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAE 10428 bytes
SHA-256: c6c81d79e48dae4fca8ad497bf759e5263a43043de1d5b8828a1441bac14f96c

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