Malicious PDF — malware analysis report

Static analysis result for SHA-256 3af2ece8823ba96e…

MALICIOUS

PDF

104.5 KB Created: 2021-02-17 06:48:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3d6570455d56796ceeb4774300df0da1 SHA-1: 02734c68372742879c0795c09f6d33535c5d52c7 SHA-256: 3af2ece8823ba96e35b0435661e47f26b12743f0eb22b4a8a516dcab4232ae9e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://baarspo.ru/strik?utm_term=using+mfj+259c+antenna+analyzer PDF link annotation
    • http://chuvashovfamily.ru/3d_car_crash_simulator_game_online998ku.pdfIn PDF document text
    • http://ogranicbio.fun/descargar_formulario_imm_5257_visa_ccr4xh.pdfIn PDF document text
    • https://wiloropijevor.weebly.com/uploads/1/3/5/2/135299547/8919957.pdfIn PDF document text
    • http://instapodarok365.site/word_connect_answers_4882s9lc.pdfIn PDF document text
    • http://glawerry.online/15422759518in7e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388416/normal_60054d1b1c6f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445743/normal_60021b6f69b7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452389/normal_5fc65d54b43cd.pdfIn PDF document text
    • https://fijapirugonobi.weebly.com/uploads/1/3/4/3/134315317/naravove.pdfIn PDF document text
    • http://manthoughtswebsite.website/algorithms_illuminated_githubgbiix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378157/normal_600f74e19383d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401703/normal_5ff12fe220545.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://golofup.rf.gd/18065398969.pdfIn PDF document text
    • http://jaxejibowanub.rf.gd/43262742024.pdfIn PDF document text
    • http://topufopotu.epizy.com/57676491658.pdfIn PDF document text
    • http://jofiwevamixeta.epizy.com/conclusion_samples_for_project_report.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B4F 5508 bytes
SHA-256: f57a30df67f46cfa514a729a4d4bda0158ce939902683bc8580aaf239815b62f
font_01_sfnt_off00015e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E01 11416 bytes
SHA-256: 4ff6bfa3f323d6bf835ac609459d97afa8cb91ea9319555d1c1bce798ef394bf
font_02_sfnt_off000184f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x184F1 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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