Malicious PDF — malware analysis report

Static analysis result for SHA-256 366f6085d03ce564…

MALICIOUS

PDF

70.9 KB Created: 2021-03-01 19:29:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6a53d6fe3370907d97f84b5764ab91d2 SHA-1: 121057f0024565eb19fe829e31badb01c7979578 SHA-256: 366f6085d03ce564541eea2b3790875b45b9091fff7386cc6658c888e86f89cc
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/award?keyword=what+three+elements+are+found+in+all+living+things PDF link annotation
    • https://dobumixil.weebly.com/uploads/1/3/0/7/130738680/d1f39108fe.pdfIn PDF document text
    • http://ruvogodozipabiv.scienceontheweb.net/howls_moving_castle_book_series.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446289/normal_5fda199c96400.pdfIn PDF document text
    • http://kalidejomepajo.scienceontheweb.net/mixubibapimamogiso.pdfIn PDF document text
    • https://paweweribawu.weebly.com/uploads/1/3/4/6/134656346/desibunefulibekuf.pdfIn PDF document text
    • https://pevumufaropis.weebly.com/uploads/1/3/4/7/134706438/gobutireto-dadega.pdfIn PDF document text
    • http://dotixomovi.sportsontheweb.net/9433415040.pdfIn PDF document text
    • https://babanude.weebly.com/uploads/1/3/4/0/134017813/870514a.pdfIn PDF document text
    • http://wudebakafepi.mypressonline.com/dyson_dc23_animal_replacement_parts.pdfIn PDF document text
    • http://fobifisoba.22web.org/dojukigoxipafe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366395/normal_5fc9560027c3b.pdfIn PDF document text
    • https://vakexojukesazi.weebly.com/uploads/1/3/0/9/130969985/5215065.pdfIn PDF document text
    • https://bugevokugado.weebly.com/uploads/1/3/4/8/134870551/vulovax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487424/normal_5ff66935d9eda.pdfIn PDF document text
    • https://kakifimetuwojo.weebly.com/uploads/1/3/4/3/134317364/1434171.pdfIn PDF document text
    • https://vebuxevofarina.weebly.com/uploads/1/3/4/0/134013543/botazalareb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xatamiv.rf.gd/3781162445.pdfIn PDF document text
    • http://pedojup.rf.gd/bruce_almighty_full_movie_free_hd.pdfIn PDF document text
    • http://ludezowitupaxel.rf.gd/68283522045.pdfIn PDF document text
    • http://lofomaseforuz.rf.gd/seismic_performance_rating_e.pdfIn PDF document text
    • http://xuzezomitan.rf.gd/conversational_chinese_301_audio.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_off0000d95d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95D 5396 bytes
SHA-256: 49b62c19298ce05379cb5c4058e8b800eab192c2775461b13c52582c9843dd5b
font_01_sfnt_off0000eb9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9B 9952 bytes
SHA-256: 18b8a107233619db38b71dd573dbf36a2c68bd9b564949920b60e193e361c677

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