Malicious PDF — malware analysis report

Static analysis result for SHA-256 7380a76efdc5718a…

MALICIOUS

PDF

70.1 KB Created: 2021-03-04 02:22:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6f7da797f1f39d8125609887528cf2ba SHA-1: fa5934dadb00e63776236c20140cb28f4669a2cd SHA-256: 7380a76efdc5718aa6ced0b94f67ace9d66fad8b5b034081afc9170b063311d6
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=2003+dodge+durango+power+steering+pump+replacement In PDF document text
    • https://cdn-cms.f-static.net/uploads/4489846/normal_6039b4352501f.pdfIn PDF document text
    • https://pifabesi.weebly.com/uploads/1/3/5/9/135958575/gepivodiboxa.pdfIn PDF document text
    • https://zujujoweb.weebly.com/uploads/1/3/5/2/135297083/jonimipafux_sixipikov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369766/normal_5fd7d28fb0337.pdfIn PDF document text
    • https://fanamixaxa.weebly.com/uploads/1/3/4/0/134017579/7395213.pdfIn PDF document text
    • http://menudajuweka.22web.org/letter_g_recognition_worksheets.pdfIn PDF document text
    • http://samubed.iblogger.org/ilive_sound_bar_aux_not_working.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451025/normal_603cb1d367b0b.pdfIn PDF document text
    • http://jutereli.iblogger.org/free_printable_punctuation_worksheets_for_high_school.pdfIn PDF document text
    • https://cdn.sqhk.co/pevelefotuve/IjR2jhu/47492886697.pdfIn PDF document text
    • http://lodixol.22web.org/ielts_listening_practice_test_academic_with_answers.pdfIn PDF document text
    • https://mutuwafidiz.weebly.com/uploads/1/3/6/0/136095616/7429639.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://webidiwotew.epizy.com/how_much_does_a_certified_financial_planner_earn.pdfIn PDF document text
    • http://kizuwopo.epizy.com/faxiwujesewazalezepam.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/adcom_565_preamp_manual.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_off0000d51e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51E 5828 bytes
SHA-256: 0539ef638d5c791a5e78bb26ea1ac739ca6143e90c5e0f2678b7a0083e588098
font_01_sfnt_off0000e8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F3 10044 bytes
SHA-256: 246eb5eddd3f9598c6ae00fb4fa4d6e17abbaf2679acf6c230e86ff7059873de