Malicious PDF — malware analysis report

Static analysis result for SHA-256 89b5978d76b183dd…

MALICIOUS

PDF

77.8 KB Created: 2021-01-26 09:53:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ef3122191da8ad462b6db76b0f0fc206 SHA-1: 1edd36dde2f2b40cf6046ca5fcfa1f3a4d6aabfa SHA-256: 89b5978d76b183dd0c2a0e60170c80247f0d1437106df279c896b653819dd6e5
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning model and ClamAV, as malicious. It contains numerous external URIs, with a significant portion pointing to disposable hosting and acting as a link farm. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/123?utm_term=west+orange+amc+ocoee PDF link annotation
    • http://soul-felt.com/sakura_school_simulator_terbaruxitp2.pdfIn PDF document text
    • https://cdn.sqhk.co/xebosulog/Dkh0jjl/american_football_wallpaper_android_hd.pdfIn PDF document text
    • http://viputixezererej.66ghz.com/2482724402.pdfIn PDF document text
    • https://cdn.sqhk.co/rukeditele/GeBhiGN/fokus.pdfIn PDF document text
    • https://buxijoxusezo.weebly.com/uploads/1/3/1/4/131483018/vonuturulipe.pdfIn PDF document text
    • https://cdn.sqhk.co/nananava/HhcigpI/harvest_church_memphis_live_stream.pdfIn PDF document text
    • https://cdn.sqhk.co/lerutefo/hbDOsid/s._o._l_stone_of_life_ex_apk.pdfIn PDF document text
    • http://copyrighthelp.info/sett_jungle_runes_s10_mobafirej3nu1.pdfIn PDF document text
    • https://rotarivinevi.weebly.com/uploads/1/3/4/5/134599250/3388439.pdfIn PDF document text
    • http://xesesevatep.22web.org/daily_food_diary_template.pdfIn PDF document text
    • https://tawigijonepoter.weebly.com/uploads/1/3/4/0/134012415/7589624.pdfIn PDF document text
    • https://sevujixosatanin.weebly.com/uploads/1/3/5/3/135316334/3006410.pdfIn PDF document text
    • http://jobauthor.online/finding_glass_balls_on_the_oregon_coastrxgzu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kagubosewox.epizy.com/xixizumakabiwibewor.pdfIn PDF document text
    • http://javozajesaretu.epizy.com/bajrangi_odia_song_ringtone.pdfIn PDF document text
    • http://melaworogafema.epizy.com/game_jcb_game.pdfIn PDF document text
    • http://jarunotaso.rf.gd/simple_house_rent_agreement_format_in_english.pdfIn PDF document text
    • http://dojeranorered.epizy.com/27121522023.pdfIn PDF document text
    • http://xuxusemo.epizy.com/25153519448.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/63456885444.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC67 5528 bytes
SHA-256: b1dc241fddefe94db3560ee270b756bbaeb51616bfe278b7f7d5ae27447407cf
font_01_sfnt_off0000ef97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF97 5100 bytes
SHA-256: 1e6776cc4ac3ab5ce58939570a18a84e257a7ab83debb422b8c675c630c6a3bf
font_02_sfnt_off000100ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100EC 12532 bytes
SHA-256: 42d9a9634782338cdd296b1c79d5ebc920ea34abcd07263efb64c1a3c57e2e1e

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