Malicious PDF — malware analysis report

Static analysis result for SHA-256 182430995b2fc8e3…

MALICIOUS

PDF

81.4 KB Created: 2021-03-14 02:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 130ba7249e06bbe7d4e3b17da885cf8c SHA-1: b20aa21ec4ae88f51467f7c5fbc9184798f4d193 SHA-256: 182430995b2fc8e3c6f8b84d0a891c87c7e2a30cda7dfd18db77ef130ff66361
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with several pointing to disposable hosting and potentially acting as a link farm for phishing or malware distribution. The presence of external URIs and the 'link farm' heuristic strongly suggest the document's primary purpose is to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/123?utm_term=rc+airboat+plans+pdf PDF link annotation
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/vonanigero-teduzu.pdfIn PDF document text
    • https://cdn.sqhk.co/tumitibira/W4hbjgf/39465599634.pdfIn PDF document text
    • http://xofelivigavas.mywebcommunity.org/sangue_o_positivo_pode_doar_pra_quem.pdfIn PDF document text
    • https://bamukafigozoxin.weebly.com/uploads/1/3/4/8/134861202/gaboxasumezeza.pdfIn PDF document text
    • https://cdn.sqhk.co/lovojekaboxi/dSfhiic/40162389627.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/hwN34ih/best_100_bollywood_songs_mp3_download.pdfIn PDF document text
    • http://losopefopamusoz.sportsontheweb.net/7322974127.pdfIn PDF document text
    • http://bewizasosu.sportsontheweb.net/wajutexapogawabufebazaze.pdfIn PDF document text
    • https://kujakaxu.weebly.com/uploads/1/3/5/3/135347331/6489237.pdfIn PDF document text
    • http://trening-ekaterinodar.ru/luxikavikuzeza691sl.pdfIn PDF document text
    • http://mebovedu.getenjoyment.net/71107275884.pdfIn PDF document text
    • https://wimavebitajiki.weebly.com/uploads/1/3/4/6/134609796/rumoxelajugumutikago.pdfIn PDF document text
    • https://dukagalirizaz.weebly.com/uploads/1/3/1/8/131856141/4397504.pdfIn PDF document text
    • https://cdn.sqhk.co/sewuvavimebi/eBYjcje/mikecrack_skin_minecraft_pe.pdfIn PDF document text
    • http://haifaiv.ru/66167742930zp1y5.pdfIn PDF document text
    • http://eglo.club/is_222_an_evil_numbern3v7i.pdfIn PDF document text
    • http://studyweb.site/pojawag8zhmf.pdfIn PDF document text
    • http://monstergym.ru/93346280744i0suh.pdfIn PDF document text
    • http://viziziziv.mywebcommunity.org/cancionero_infantil_con_acordes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vigavanoxe.onlinewebshop.net/omnisphere_2.6_library_size.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d205b17b-016e-40a3-8ada-32f5ce60b2e7/how_to_port_mobile_number_in_bsnl.pdfIn PDF document text
    • http://sawesupunozigiv.atwebpages.com/sinupup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/243f7899-5ae5-406f-9bfa-ce1657dfb1c1/puvidebajejijig.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_off0000fec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC9 5296 bytes
SHA-256: dc6f0fdd237f59b145c1a6e18b621ad774190a0ab08b540a15b86450e6c267fc
font_01_sfnt_off000110de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110DE 11724 bytes
SHA-256: 26e0d9146cb5352b801a42619461af8303d83e9775c64c29619a5ee2c9df0765

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