Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e01763c9ffff296…

MALICIOUS

PDF

78.8 KB Created: 2021-03-20 08:21:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f2f4cb6d346a3776fd7614ac7f96e058 SHA-1: b4b84c4155e0f5a76b3876fa3044e4e2d3c5d774 SHA-256: 7e01763c9ffff296fe3e6d40554dc929143526a38d00388ff2b6cc84f46fdf85
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a prominent one directing to 'xajibur.ru' and a related heuristic indicating a link farm on disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or a scam. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xajibur.ru/strik?utm_term=how+to+day+trade+on+td+ameritrade+without+25000 PDF link annotation
    • http://lofajemami.sportsontheweb.net/73671525528.pdfIn PDF document text
    • http://titanof-filtr.ru/59108729353mw4t1.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/gjiYJjc/budget_travel_to_santorini_greece.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/hjhhhdL/mipitigakulakodigugi.pdfIn PDF document text
    • http://topcreditreport.info/91996223402pu6qg.pdfIn PDF document text
    • https://godanikepogi.weebly.com/uploads/1/3/4/5/134509841/linuwo-xudigobupuxiba.pdfIn PDF document text
    • https://xazowivuxef.weebly.com/uploads/1/3/4/5/134513065/xovaxoruzepugix_wedulo.pdfIn PDF document text
    • https://cdn.sqhk.co/veleviziwew/UzTxgsz/cube_breaker_app.pdfIn PDF document text
    • https://zatuzura.weebly.com/uploads/1/3/1/4/131453499/9854089.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/jawvhds/uphill_rush_3_crazy_games.pdfIn PDF document text
    • http://wide-take.top/34275376075iiwg4.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/jheEhb3/nesenubadopuzigutami.pdfIn PDF document text
    • https://laxukiwu.weebly.com/uploads/1/3/1/0/131070933/gazarefitupix.pdfIn PDF document text
    • http://juzufezike.mygamesonline.org/pivewerugovopakakujajamij.pdfIn PDF document text
    • http://vash-komfort5.ru/norse_god_tattoos82iq1.pdfIn PDF document text
    • http://ipai.online/86219811406jw31a.pdfIn PDF document text
    • http://mevizazivi.22web.org/jufanozuzosuwoxiwavuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/rajewexosoxazafokowog.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/bipuvapodepoxosijamez.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/takigukorunav.pdfIn PDF document text
    • http://memaded.epizy.com/comunicacion_entre_personas_sordas_y_oyentes.pdfIn PDF document text
    • http://toxosimokumo.rf.gd/55950347620.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/whatsapp_status_video_saver_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/maxuxivatojigiwonotepima.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_off0000f58a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58A 5408 bytes
SHA-256: 94dd97ad8bc33920caab3ce1cab8e281daf6812a8b294f78218814bca7790390
font_01_sfnt_off000107dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DD 10972 bytes
SHA-256: f5ea3f2fdb02e961535bc8c24ae4a6ce5c04ec3aec1f266dbb42ce4ddcbe15a6

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