Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d1cb6ec4586be4e…

MALICIOUS

PDF

93.5 KB Created: 2021-03-15 02:26:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbf7ea4936087ef4823f0df7c6b144ef SHA-1: d9d9d235959f6620cc7761fc886814441374e30e SHA-256: 6d1cb6ec4586be4e8fb5c513473c8f73396e91f953ede10efa8cef4c582443b3
96 Risk Score

Malware Insights

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

The file is a malicious PDF detected by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site or download further malware. The document body, though heavily obfuscated, suggests a lure related to coin catalogs, which is a common tactic for phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/strik?utm_term=2021+standard+catalog+of+world+coins+2001-date
    • https://cdn.sqhk.co/wesegagage/hdhdIqs/all_deaths_in_lord_of_the_flies.pdf
    • http://naxekularem.22web.org/estimation_costing_and_evaluation.pdf
    • https://cdn-cms.f-static.net/uploads/4376856/normal_603bdb754f09e.pdf
    • https://cdn.sqhk.co/zewumabigige/4dTQ3hi/briefings_in_bioinformatics_latex_template.pdf
    • https://static.s123-cdn-static.com/uploads/4491437/normal_5fc9bba45e1e3.pdf
    • https://cdn.sqhk.co/bulelovuroga/UUhjBjd/alien_swarm_3d_proxy.pdf
    • https://cdn.sqhk.co/litametun/3ASlicX/dokafu.pdf
    • https://cdn-cms.f-static.net/uploads/4458417/normal_6029a9c9ba54e.pdf
    • https://cdn.sqhk.co/mewowoji/hjfEigP/51396633206.pdf
    • https://cdn.sqhk.co/nupepewomaxu/ijbidih/mjr_adrian_digital_cinema_10_adrian_mi.pdf
    • https://cdn.sqhk.co/tomibigi/4igJzic/brave_frontier_mod_unlimited_gems_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4454040/normal_5fe517f68c33a.pdf
    • https://static.s123-cdn-static.com/uploads/4480594/normal_6008f07f74b2a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nazedizabif.rf.gd/penumbra_necrologue_ita.pdf
    • https://s3.amazonaws.com/gumegulaxi/mufafunusafixul.pdf
    • https://7ef5d8b8-74ac-4e0a-b0a0-fa61ca6462a8.filesusr.com/ugd/23e9be_b3a6ebb06b934b18ad0ad154d09646ff.pdf?index=true
    • https://s3.amazonaws.com/pekatikisuruki/gixideritijazetozosatawu.pdf
    • https://c31d65df-273c-4bcc-acfb-7b03b0724b99.filesusr.com/ugd/e7e4a0_474630663e144ddb9eb9de447448eff2.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_off0001207b.bin
cd41bceefe09e5bf99003caa6b729696c2afae4426e1f1d03c67e0bd6dcb5be6
pdf-font-stream PDF embedded font (sfnt) at offset 0x1207B 5544 bytes
font_01_sfnt_off00013386.bin
965088dc8146b00d5823106190916c6bb07282b5203758a8c6d2199eb82802dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x13386 18192 bytes