Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a9d8c806551735a…

MALICIOUS

PDF

74.4 KB Created: 2021-03-14 23:36:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 5f0240942e002e195fe147f47f5aee86 SHA-1: 22a9107a914c2d9523e80acc4970eaa2075c5306 SHA-256: 6a9d8c806551735ad93b5270f40517be223379ecf095541c6c2b57de96a8b43b
126 Risk Score

Malware Insights

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

The PDF document contains a lure related to opening a lock with a dead battery, which is a common tactic for phishing or malware distribution. It embeds multiple URLs, with a primary suspicious URL pointing to dugedepap.ru. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to serve a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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
  • 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://dugedepap.ru/strik?utm_term=how+to+open+schlage+keypad+lock+with+dead+battery PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375696/normal_5ff38161d73d7.pdfIn PDF document text
    • http://koxelovanalimu.getenjoyment.net/12211937475.pdfIn PDF document text
    • http://xenuven.22web.org/avast_cleanup_apk_uptodown.pdfIn PDF document text
    • http://masonufidowex.iblogger.org/58194980573.pdfIn PDF document text
    • http://zajifokabatu.iblogger.org/will_codicil_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478927/normal_604d5fa8a0076.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416504/normal_5ff6bdbb93f31.pdfIn PDF document text
    • http://vijofogozorumi.22web.org/aligarh_muslim_university_date_sheet.pdfIn PDF document text
    • http://alania365.ru/novilojades7fs4.pdfIn PDF document text
    • http://jekeluxuto.mywebcommunity.org/81445515668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417809/normal_604b91f0dd50a.pdfIn PDF document text
    • http://alcexpress3.xyz/attack_the_light_apk_2020m2m1m.pdfIn PDF document text
    • http://tevutubiwij.getenjoyment.net/95020100649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383314/normal_60463401e2f33.pdfIn PDF document text
    • http://itverys.space/bowflex_xtreme_2_manual_assemblye4ing.pdfIn PDF document text
    • http://diporesorojina.scienceontheweb.net/33182702567.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vomematomeze.epizy.com/sarurapit.pdfIn PDF document text
    • http://wogurep.epizy.com/yellowhammer_report_government_website.pdfIn PDF document text
    • http://zedofaxuboz.onlinewebshop.net/13549801375.pdfIn PDF document text
    • http://xugenakijab.epizy.com/jipoboxevonebemobegib.pdfIn PDF document text
    • http://ferenekukosazu.epizy.com/algorithms_time_complexity_cheat_sheet.pdfIn PDF document text
    • http://deravamosu.rf.gd/bitdefender_gravityzone_server.pdfIn PDF document text
    • http://josewovegufi.rf.gd/ludezegudixu.pdfIn PDF document text
    • http://nabiporemug.epizy.com/bosudanov.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_off0000e52c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52C 5692 bytes
SHA-256: 4cc54ac9d12d048a253cb4fb6e67306c7b3d1aa96ae03ec1aab1529fc358af3f
font_01_sfnt_off0000f895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF895 10364 bytes
SHA-256: 486756a239a53057f8a97132cf19969bf0e3f20e2d26dcc35cdfdc433d1ed9a7

Open this report in the interactive analyzer, or submit your own file for analysis.