Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a1a825e4776cc3b…

MALICIOUS

PDF

71.6 KB Created: 2021-02-14 02:22:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 5766283028bbe607ac02b2da76c3f18c SHA-1: 33cbc7971c17d64cec18857ee73416a39e74eb32 SHA-256: 7a1a825e4776cc3b947a8bf14781fa23ba931c49eb1108a810482bb982493872
126 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
  • 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://jacksth.ru/wix?keyword=algebra+connections+book+answers PDF link annotation
    • https://kibidabusiben.weebly.com/uploads/1/3/1/0/131070702/f5e4ec1074e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485718/normal_600ee7ef5e3dd.pdfIn PDF document text
    • http://wixiziz.iblogger.org/48929041332.pdfIn PDF document text
    • http://sebemigon.66ghz.com/17591697630.pdfIn PDF document text
    • https://susominen.weebly.com/uploads/1/3/4/7/134714937/jurodugubuzu.pdfIn PDF document text
    • https://mavakonagidesa.weebly.com/uploads/1/3/1/4/131483278/juzulixezelivimafo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482849/normal_5fd9aacca7c71.pdfIn PDF document text
    • http://memaviwebepa.22web.org/bewars_movie_video_songs_hd.pdfIn PDF document text
    • http://pofitasexa.iblogger.org/bigo_live_apk_jio.pdfIn PDF document text
    • https://lidonamu.weebly.com/uploads/1/3/4/7/134722791/pasudibibidazig.pdfIn PDF document text
    • http://peroguve.iblogger.org/vocabulary_test_online_with_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405467/normal_5ff1d13cd05f7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zanebinelit.rf.gd/hacer_manualidades_con_papel_lustre.pdfIn PDF document text
    • http://sujosivetobifir.epizy.com/knowing_brother_izone_eng_sub.pdfIn PDF document text
    • http://zatejufeg.rf.gd/botswana_public_health_act_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/digestive_system_diagram_worksheet_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/definition_of_curriculum_by_experts.pdfIn PDF document text
    • http://nujuxat.epizy.com/firebase_analytics_log_event_android.pdfIn PDF document text
    • http://guvetevuvov.epizy.com/14203282050.pdfIn PDF document text
    • http://bijiwamosijiw.epizy.com/38206342251.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_off0000dc80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC80 5252 bytes
SHA-256: f13f999ad880e1f16bc3a29945098cd61ed26c3766885d6cc1156f2bd601ce43
font_01_sfnt_off0000ee82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE82 10092 bytes
SHA-256: c06994097facd53f86f249c9d0bf9a506a7ee9e32453c1a41a9e398c0b0fb91a