Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de6825ee2196051…

MALICIOUS

PDF

70.6 KB Created: 2021-03-21 00:04:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f0eec835c43a3ba25ac87060af7c6c6 SHA-1: 767246dd1b960b0cf987c1c4cb4d0711f922f18a SHA-256: 4de6825ee2196051e60ff75966f29616e1fe3c214f7c9b29082a578b33826dc9
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to 'resalured.ru', which is likely used for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to Panasonic phone features. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing or malicious content delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://resalured.ru/strik?utm_term=panasonic+phone+delete+blocked+numbers
    • http://operationhomeplate.com/how_to_write_self_recommendation_letter_for_scholarship6ftn4.pdf
    • http://verefdliyvtorogo.xyz/black_and_tan_siberian_huskyvcg4o.pdf
    • http://mirror-x.org/wuxefoxajorakikajemaz2rjm.pdf
    • http://persequenteamsohbet.com/84733997983u3c69.pdf
    • http://kipivuz.iblogger.org/2538996596.pdf
    • http://gixuzozubo.22web.org/formalism_theory_definition.pdf
    • http://item-mask.top/vugelagugokujzm0kc.pdf
    • http://nicechange.space/46917286135dltjm.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b133b025-67d1-4190-9e53-fbb99503dec2.filesusr.com/ugd/caf13f_5318ca2e603042ed8ce84957992236fd.pdf?index=true
    • http://fofuxolisemaxim.epizy.com/ropebafujiderofi.pdf
    • http://suferipuwa.epizy.com/momon.pdf
    • http://fomariwidodazum.rf.gd/mipaluti.pdf
    • http://litiwevapebani.epizy.com/amblyopia_treatment.pdf
    • https://uploads.strikinglycdn.com/files/c8e05a5d-5315-4f3a-a2e1-ddf5cd6e460a/6677724464.pdf
    • https://uploads.strikinglycdn.com/files/a7b5bb33-8ad6-435f-b002-c403cba240f8/nulodebasurizox.pdf
    • https://ca39a19f-16f9-469f-ab0b-65ec0463b8d0.filesusr.com/ugd/cc9b97_e7cf3ef5485045899cb57d6b4b8cd433.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d52e.bin
4e776fddf42d0120f780946ee5e7cefa7fe44a6740a05a9036ed9a3cb906ab22		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD52E 5516 bytes
font_01_sfnt_off0000e7c0.bin
04f18d44416d1ab2078a3f529b29ff99bfe5cc2939c27ae8fc09797090182d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C0 11012 bytes

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