Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fea6255febd9328…

MALICIOUS

PDF

77.7 KB Created: 2021-02-16 02:23:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 3551d1cdcee00a6d7259a391f0bb927a SHA-1: df3bf175a2fe3d80f6ef04666a057d38a770e6ba SHA-256: 2fea6255febd9328e427c62691be67c7ee474bea8fb03393df38b8cf3e146a43
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external URLs, many of which are hosted on disposable domains and appear to be part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a lure to external malicious content, likely for initial access via spearphishing.

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://baarspo.ru/123?utm_term=sopa+de+letras+para+imprimir+para+adultos+mayores PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416132/normal_5fcdf38db6dca.pdfIn PDF document text
    • http://lnstagramverificationbadge.com/kral_kaybederse_kenannzaa7.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/jtiifgj/service_projects_around_me.pdfIn PDF document text
    • http://merishwheelrecords.com/rabifevvxedf.pdfIn PDF document text
    • https://cdn.sqhk.co/manowipete/j6gg8wv/age_of_thrones.pdfIn PDF document text
    • http://zomuregunaradu.iblogger.org/comida_saludable_informacion_en_ingles.pdfIn PDF document text
    • https://vexikolilugurud.weebly.com/uploads/1/3/1/3/131379290/mugefejixosu.pdfIn PDF document text
    • http://itabody.space/camera_raw_filter_cs4_freen5coy.pdfIn PDF document text
    • http://mediaverifiedbadge.com/zenuponexorojegy8c0.pdfIn PDF document text
    • https://jorevubo.weebly.com/uploads/1/3/4/8/134869484/xewigovigere.pdfIn PDF document text
    • https://dawudetunik.weebly.com/uploads/1/3/5/9/135972975/tudinab_badifezamabim_bejudalaxowix_jabawudeli.pdfIn PDF document text
    • http://wevoselaxoto.66ghz.com/kyocera_taskalfa_3551ci_fax_operation_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368244/normal_601fb0f17fdbd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386622/normal_5fc6942dd5fce.pdfIn PDF document text
    • http://deflecfcvy.best/pajelesudetakumevivawet8ptuj.pdfIn PDF document text
    • http://porn77.design/nafuruxajidoxnwvx.pdfIn PDF document text
    • http://makamar.xyz/jozaxawaneio3w8.pdfIn PDF document text
    • https://cdn.sqhk.co/kadefowuvun/jja3jb2/splendor_game_strategy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413585/normal_5fdd93dca887a.pdfIn PDF document text
    • https://xebagamalod.weebly.com/uploads/1/3/1/3/131383607/fuwiteti_nabebad_lejob.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gulavutimomoxu.rf.gd/waxinafumutuwaxibod.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_off0000f113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF113 5312 bytes
SHA-256: b18592fbbc6c14ce1e482ba73e8d1f6d7598acf6c69c892a4c6c27386ecd8e2b
font_01_sfnt_off0001030f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030F 11156 bytes
SHA-256: f59f5c0690de7b62de4601199339dfd1324d8d9c3139fc18a0f71898858ee583

Open this report in the interactive analyzer, or submit your own file for analysis.