Malicious PDF — malware analysis report

Static analysis result for SHA-256 12538d254790ed01…

MALICIOUS

PDF

70.1 KB Created: 2021-03-20 06:33:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6f6f03726814f35116951b563dcab098 SHA-1: b82387b189fbd51efac7324cee81b8ed6be51b42 SHA-256: 12538d254790ed01f4048a88c6a6675b2139f64512c68341642e3c6229ab320d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous external URIs, with a primary focus on the URL 'https://mezovuduw.ru/strik?utm_term=sunvision+pro+24s'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is part of a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. No scripts were extracted, but the presence of embedded URLs and the link farm heuristic strongly suggest an attempt to redirect users to malicious content.

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://mezovuduw.ru/strik?utm_term=sunvision+pro+24s PDF link annotation
    • https://lexawuvake.weebly.com/uploads/1/3/4/6/134610488/a1f807e1.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/hgghbid/bemowobizibubod.pdfIn PDF document text
    • https://zukodefikarux.weebly.com/uploads/1/3/4/4/134498552/xasovujurevonufakix.pdfIn PDF document text
    • http://pupunorip.getenjoyment.net/argal_pumps.pdfIn PDF document text
    • http://taxevidel.medianewsonline.com/22937911136.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/42124158990.pdfIn PDF document text
    • https://fobabunopana.weebly.com/uploads/1/3/0/9/130969757/kijimuterumotig_sugunuwutajawe_venogiwese.pdfIn PDF document text
    • https://cdn.sqhk.co/liritefebat/fD11Dia/fuzewiwogowulufekipowosu.pdfIn PDF document text
    • https://mozimokitazipa.weebly.com/uploads/1/3/1/4/131407977/vixijeb-jamoxasilibiz-newomaxezogavo-vususubifapene.pdfIn PDF document text
    • https://cdn.sqhk.co/malofavu/hghhFgf/looper_movie_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/wenewojufaj/heH1qf7/siwewowilopuxezorakil.pdfIn PDF document text
    • http://fexevewuli.mypressonline.com/4967038468.pdfIn PDF document text
    • http://ziposodepow.mywebcommunity.org/muxugapiba.pdfIn PDF document text
    • https://durafozo.weebly.com/uploads/1/3/0/7/130740533/gususepitakek_joredomifa_pakugedamokoj_tabazedin.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/jhfF6q2/54873981298.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/jisisugox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/62694574-e3d2-40d0-acef-386e52f3dba6/6301715022.pdfIn PDF document text
    • http://rusuxagek.rf.gd/agent_bhairava_telugu_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dc4ef95-8912-4570-8e65-480a3ca0d76b/wonurizigaxitekekuw.pdfIn PDF document text
    • http://rapuziba.epizy.com/37188028160.pdfIn PDF document text
    • http://kotasogova.rf.gd/bearded_dragon_diet_sheet.pdfIn PDF document text
    • http://nezarokex.epizy.com/nigelukolukuzipipa.pdfIn PDF document text
    • http://womejus.rf.gd/formasi_sscn._bkn._go._id_oktober_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6949485-7fe6-4430-be1f-a08db079991b/55087404251.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_off0000d66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66F 4956 bytes
SHA-256: ef6ae489d8f77b65101c38c7fdf2f4bc522dc3115553dcb277fa44cc0f7b25d1
font_01_sfnt_off0000e76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76B 10448 bytes
SHA-256: 7f251e1c2cdf89afaa5794fb1d6d0d32b2b39baf7c3bc78fd25afbbc47b4a40e

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