Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d54acea91234bbf…

MALICIOUS

PDF

71.6 KB Created: 2021-02-23 01:17:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 7f57ee0b01b1d106b9c64f0ec6654afb SHA-1: a04924f6fd427b9be04b8c1765aedc5575c5afe5 SHA-256: 8d54acea91234bbfcdb2bc2a7a31be84dcf542827c1416586343a59a12459cd3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/strik?utm_term=all+the+rules+of+the+internet PDF link annotation
    • https://tetagusupawuwag.weebly.com/uploads/1/3/4/5/134586179/rupisafatagis.pdfIn PDF document text
    • https://cdn.sqhk.co/fadejiweruw/iejeq4I/pezejirexomuditaranusirov.pdfIn PDF document text
    • https://cdn.sqhk.co/zosurinipin/7jgijgg/welding_tanks_for_sale_craigslist.pdfIn PDF document text
    • https://cdn.sqhk.co/guzikiku/giiiyif/best_vegan_gluten_free_carrot_cake_recipe.pdfIn PDF document text
    • https://cdn.sqhk.co/gemesikexo/ichaNid/dowupapa.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/biijiAl/grand_hotel_mania.pdfIn PDF document text
    • http://kojovud.iblogger.org/how_to_advance_engineering_career_sims_4.pdfIn PDF document text
    • https://cdn.sqhk.co/dofubetu/7Vjfmie/johnny_bonasera_2_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vegunag.rf.gd/africa_cyber_security_report_2019.pdfIn PDF document text
    • http://fozagagubimamow.epizy.com/army_golden_master_server_2019.pdfIn PDF document text
    • http://zakuvusebaj.epizy.com/aptitude_examples_with_answers.pdfIn PDF document text
    • http://joveteki.epizy.com/xizunasarovuwetegopi.pdfIn PDF document text
    • http://faruvesisok.rf.gd/bathukamma_songs_telugu_lo_ing.pdfIn PDF document text
    • http://xokesuluz.epizy.com/cricket_news_video.pdfIn PDF document text
    • http://vudexejuvejutek.rf.gd/lijafunagaxavumuwemami.pdfIn PDF document text
    • http://wozaloruwogilo.rf.gd/chirp_software_android.pdfIn PDF document text
    • http://rilevajikilesew.epizy.com/93316956999.pdfIn PDF document text
    • http://vokotikif.epizy.com/rezakakilop.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_off0000ddb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB8 4632 bytes
SHA-256: 67d226617eb109a419c88f2d83f74f4e116ff46acdf5db5c6b88c3c4daffda72
font_01_sfnt_off0000ed74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED74 10536 bytes
SHA-256: d85f545cd67aa9c5038ce85cfd9578ae18628e3f8283a1fbc095326999a614b2