Malicious PDF — malware analysis report

Static analysis result for SHA-256 f256d49aaa645361…

MALICIOUS

PDF

72.7 KB Created: 2021-02-22 14:28:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 36b21dd40c1af49bbe60df9103f4e61e SHA-1: 8dfe611397090e1bbb8832140e6f4f96a8e25de9 SHA-256: f256d49aaa645361428352ca6afab7e6e5377effa875263e2ed76fa971481a3f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'baarspo.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to looking up driving records, suggesting a lure to entice users to click the malicious link. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly indicate a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=how+to+look+up+driving+record+illinois PDF link annotation
    • http://connexion-amelii.xyz/roar_tiger_of_sundarbantor9f.pdfIn PDF document text
    • http://idealicaitalia.website/95235188186c1zbh.pdfIn PDF document text
    • http://terem.space/31960597434zie87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449775/normal_60240099ea664.pdfIn PDF document text
    • https://cdn.sqhk.co/tizudukokeni/jLxggja/spirit_halloween_altoona_pa_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/6SifHic/stick_with_it_crew_drop_tiktok_song_name.pdfIn PDF document text
    • http://canonsburglake.com/zombie_original_versiondiios.pdfIn PDF document text
    • http://reduslim-europa.site/922466326741auvq.pdfIn PDF document text
    • http://rameautbxy.space/lease_cost_calculator_uk914hc.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/tizowodifi/pdf_libro_pensar_rapido_pensar_despacio.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/the_boy_in_the_striped_pajamas_maria_character_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/braun_coffee_grinder_ksm2_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/leatherworking_wow_classic_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/35888854167.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_off0000df7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7B 5208 bytes
SHA-256: 9e08699080c006c6aa66aa0da10d73f92d307ee60202d507185f84730fb5a7bf
font_01_sfnt_off0000f161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF161 10672 bytes
SHA-256: 39a724ca352fc6d5b7296182012bf867fa1f5a1e3d3885cec790879ee5a6d54f

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