Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06d10a749424659…

MALICIOUS

PDF

72.8 KB Created: 2021-02-17 12:19:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d5109287149592b8ec0ca3480a6bd354 SHA-1: 7b3b4976e10c1552d71b1dba7be73672eaa124ca SHA-256: e06d10a7494246593b6c076fce1b9e6327f2d2e02977b4d3e8f66d3c5f0682af
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to suspicious domains, and is flagged by ML classifiers and ClamAV as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a large number of links on disposable hosting, suggesting a phishing or malware distribution campaign. No scripts were extracted, but the presence of external URIs and the overall structure strongly suggest a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/strik?utm_term=same+old+lang+syne+chords+piano PDF link annotation
    • http://copytoshka.ru/xogagixaveloreszmia.pdfIn PDF document text
    • http://requiredjokblog.com/tissot_1853_touch_manualbb8f6.pdfIn PDF document text
    • https://cdn.sqhk.co/zipodumup/f54icgc/mustang_super_snake_vs_dodge_demon.pdfIn PDF document text
    • http://reduslimitalia-official.website/waptrick_soul_music_free2z790.pdfIn PDF document text
    • http://vemafenuxaj.22web.org/bibuvuf.pdfIn PDF document text
    • https://cdn.sqhk.co/dapumexader/jiHiagg/defender_2_mod_apk_1._4._9.pdfIn PDF document text
    • http://mebets.xyz/57013741743t32yy.pdfIn PDF document text
    • http://fasad-dom.site/aplikasi_convert_word_ke_freezuekr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sewesomepajava.epizy.com/battle_cats_hayabusa_true_form.pdfIn PDF document text
    • http://dojopugoput.epizy.com/washing_machine_technical_specification.pdfIn PDF document text
    • http://tuvufuxo.epizy.com/tazelirani.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/mulumedegojax.pdfIn PDF document text
    • http://losaxoxajav.epizy.com/barker_college_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/dutika.pdfIn PDF document text
    • http://juvudujaxajiji.epizy.com/attached_document_email_template.pdfIn PDF document text
    • http://daroxupotebaliw.rf.gd/business_event_invitation_letter_template.pdfIn PDF document text
    • http://zinuforonubas.rf.gd/algebraic_equations_and_inequalities_exercise_10_answers.pdfIn PDF document text
    • http://nogomazarem.epizy.com/gmat_official_guide_verbal_review_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/tavepoviwiwalezeg.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/feravukim.pdfIn PDF document text
    • http://tivesotevobewuz.epizy.com/father_s_day_worksheets_elementary.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_off0000ddf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF6 5692 bytes
SHA-256: 156f94cf601156e6a84d9035b9cfbc0423aecaf972860276c65a4b0dc22549ae
font_01_sfnt_off0000f12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12C 10752 bytes
SHA-256: 60db568198b0cd90b2bea5d50e60dca2c5fdb877658db831d152a5c672634ea4

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