Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ee013c279dee58…

MALICIOUS

PDF

83.8 KB Created: 2021-04-26 20:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5787e52f59aed1d51f57bba29250e4e4 SHA-1: bee956a1dab58e35809e4352f09e89b78ea6f5de SHA-256: 68ee013c279dee5852627a16aac4ba6fa6c100678e6c79c22e8ed1aef23cb892
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting or suspicious domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, appears to be a lure related to appliance repair, likely designed to trick users into clicking the malicious links.

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://bologen.ru/strik?utm_term=how+to+replace+a+hidden+heating+element+in+a+ge+oven PDF link annotation
    • http://donbetosstreettacos.com/91614451554yx23i.pdfIn PDF document text
    • http://davifil.iblogger.org/safebujejezemeluvirenefuw.pdfIn PDF document text
    • http://pukujadud.getenjoyment.net/types_of_reinforcements_in_composite_materials.pdfIn PDF document text
    • http://avto-document.site/kisurrfjyj.pdfIn PDF document text
    • http://lnstagramsupportlives.com/14914131300ynb6x.pdfIn PDF document text
    • http://tivirazetuxozux.22web.org/97283985244.pdfIn PDF document text
    • http://gilumesu.mypressonline.com/jeturimegikit.pdfIn PDF document text
    • http://betflixguvenilirmi.com/dixuxomizavifinekewoxareesj.pdfIn PDF document text
    • http://jijuduli.mywebcommunity.org/15380520711.pdfIn PDF document text
    • http://zegexiwupogufe.22web.org/barfu_am_klavier.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/wujanozo/lesifaxutupekesenunit.pdfIn PDF document text
    • https://952d9f4b-853a-4e85-af28-23c4d489d487.filesusr.com/ugd/8db125_c39097fe909242a38f2dd9674ce32355.pdf?index=trueIn PDF document text
    • http://jamenajiko.myartsonline.com/45421819389.pdfIn PDF document text
    • http://vawivulumekil.onlinewebshop.net/51890628810.pdfIn PDF document text
    • https://d75bbb92-b0e4-4b50-83e6-2443e695523b.filesusr.com/ugd/bc73b9_47e74790e10141b2ba973fb91dbcfdd3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lulelepese/crossfire_series_movie_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/99164451094.pdfIn PDF document text
    • https://1f571a09-6495-4108-bd1a-9715deae29b5.filesusr.com/ugd/b0bf26_d51dd90be0804fc59052aed6d19de702.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/t_sql_format_percent.pdfIn PDF document text
    • https://52f9d6e5-2fd5-4906-a030-4d12f703b62a.filesusr.com/ugd/297ecd_02d03aa7debd4cd4b85f9cabc1f07962.pdf?index=trueIn PDF document text
    • http://milemezubuli.epizy.com/metabolisme_vitamin_dan_mineral.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/dukiwomoji.pdfIn PDF document text
    • http://jopugobov.rf.gd/poxubeparop.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_off000103c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C4 5420 bytes
SHA-256: 9bf82993179899e4a8dca18fcb0cb0125e36f0e74cdc763a53c0776ef8548f2c
font_01_sfnt_off0001161a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1161A 12496 bytes
SHA-256: f12959e87108141fa82d3f88d28769074f2707276f3ddf0485d27c4c4392c7a1

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