Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ced293a53b525f8…

MALICIOUS

PDF

73.8 KB Created: 2021-01-26 07:18:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c3cd6f912abee3a443a9dd9133c8179e SHA-1: ea1e66992667be72784656c8f93bcc05e97222f3 SHA-256: 8ced293a53b525f811f5cc8a634e978d7e4c56ad1d42ccd4d2acb366ba8608b0
126 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'glow in the dark contact lenses' and includes numerous embedded URLs, many of which point to disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=glow+in+the+dark+contact+lenses+for+sale PDF link annotation
    • http://daravto18.ru/4_pics_1_word_daily_puzzle_chilesr20o.pdfIn PDF document text
    • http://tevuvisena.iblogger.org/62203714949.pdfIn PDF document text
    • http://vvinorama.website/galaxy_wars_fighter_force_2020_modlceh5.pdfIn PDF document text
    • http://kekebum.22web.org/ashford_kent_weather_report.pdfIn PDF document text
    • http://lemiritafuwab.22web.org/2808987270.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fikikozazilut.rf.gd/xatogureja.pdfIn PDF document text
    • http://nopatiget.epizy.com/lithium_disilicate_ceramic.pdfIn PDF document text
    • http://mafovipuvawo.epizy.com/zifinodunaramisexakok.pdfIn PDF document text
    • http://fotiworoz.epizy.com/english_worksheets_for_5th_graders.pdfIn PDF document text
    • http://befijipaz.epizy.com/adobe_air_games_for_android.pdfIn PDF document text
    • http://ziwilud.epizy.com/chennai_city_route_map_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/54104956554.pdfIn PDF document text
    • http://lizaduguxo.epizy.com/guwahati_assam_weather_report.pdfIn PDF document text
    • http://xuvotawelotito.epizy.com/reading_comprehension_exercises_with_answers_a2.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/cadbury_report_corporate_governance.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/ndis_complaints_policy_template.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/45503220562.pdfIn PDF document text
    • http://numowun.rf.gd/army_dcpds_guide.pdfIn PDF document text
    • http://fulovefodib.epizy.com/brighthouse_financial_printable_forms.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_off0000e4d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D9 5296 bytes
SHA-256: c8ae7d4ae8efdfb1c7a6a6fe80951a19e6b47fbcc438a547ffc2514ee4af64cd
font_01_sfnt_off0000f6ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EE 10184 bytes
SHA-256: 568b583718400ec170143ab613236765cf86395c86c0f0d0b7e41b6e32908b32

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