Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ede5f0174062bb…

MALICIOUS

PDF

76.0 KB Created: 2021-03-07 20:33:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 868db44d3b41620cae74315c3f9f640e SHA-1: 0c4830382825f2de7b28632a5fe17fe5a72992b0 SHA-256: d9ede5f0174062bbb110c278db3a76ac4146c730909c71c120c32c152ec14d1d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm or phishing lure. ClamAV detection and ML classification strongly suggest malicious intent, likely for phishing or malware distribution. The presence of external URIs and the link farm heuristic point towards an attempt to redirect users to potentially harmful content.

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://jottigo.ru/strik?utm_term=what+is+the+most+dangerous+prison+in+england PDF link annotation
    • http://bestcreditcheck.info/house_of_night_tattoosxfkij.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/ja2JhAj/zara_near_me_nyc.pdfIn PDF document text
    • http://arbitestpark.xyz/billie_eilish_songs_youtube_playlistwsc0h.pdfIn PDF document text
    • http://kiwenalod.medianewsonline.com/how_to_set_g_shock_ga_110.pdfIn PDF document text
    • http://aromaita.space/bodumigetamovobuzovu4rnl.pdfIn PDF document text
    • https://cdn.sqhk.co/zufuxirap/6jjkdxF/23764786370.pdfIn PDF document text
    • http://shopeuro.pro/80327291447k3ock.pdfIn PDF document text
    • http://wwnews.site/sales_analysis_report_meaningp0qox.pdfIn PDF document text
    • https://cdn.sqhk.co/kokademesuz/axhgic0/marketing_strategies_during_covid_19_pandemic.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/FgeWheZ/my_talking_tom_download_for_windows_7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9c789f27-b70c-4c9d-9e83-211ee8f99b38.filesusr.com/ugd/bdeb4c_0c680860844e4a10af58ade8687d428c.pdf?index=trueIn PDF document text
    • https://b5d51143-f34a-4a4f-9265-6917490cb775.filesusr.com/ugd/9f69bd_a21f5ba7faa84839b331b9624086dfef.pdf?index=trueIn PDF document text
    • http://xojurasonalefan.rf.gd/wagidofusuripifevu.pdfIn PDF document text
    • http://zaxutakizet.epizy.com/25187066826.pdfIn PDF document text
    • http://jekowatu.epizy.com/25761429937.pdfIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_dcb24c0d714f44c38ad6345325dd5a6e.pdf?index=trueIn PDF document text
    • https://6a8c3f3f-5248-4e80-80e0-4bf2c04f72bc.filesusr.com/ugd/8b2c09_a831ab13ff5947208e1c413050c06e7f.pdf?index=trueIn PDF document text
    • http://tofujuwo.onlinewebshop.net/danezoma.pdfIn PDF document text
    • http://sirovorisolilu.rf.gd/mukiwoxurog.pdfIn PDF document text
    • http://kolenexe.epizy.com/22005567210.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_off0000eab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB5 5384 bytes
SHA-256: bce3864ae5f2dd6428c91df0747cc363df2dd099fcc31e71f6d2efc53a931088
font_01_sfnt_off0000fce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE4 11308 bytes
SHA-256: 82dc98bc063b461f6996e71195017ae5f78cd7d3e73bf733364795cd8880ea8c

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