Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce90c065d3e2366f…

MALICIOUS

PDF

75.7 KB Created: 2021-02-19 01:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 68c20218bf0d3133e41780599e4adac0 SHA-1: a267941e0c55fbd052de9b500d914fb985d417a4 SHA-256: ce90c065d3e2366fb010924d2cc768001d8a8bd8816348b55fce1dead44a5048
136 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The document contains a lure for a free download, which redirects to the URL https://seumenha.ru/strik?utm_term=game+of+thrones+first+book+chapter+1, likely a phishing page. The presence of embedded URLs and the heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' strongly suggest a phishing campaign designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/strik?utm_term=game+of+thrones+first+book+chapter+1 PDF link annotation
    • https://cdn.sqhk.co/xevowuto/UJjdc64/download_game_survival_heroes_moba_battle_royale.pdfIn PDF document text
    • https://cdn.sqhk.co/xakutofi/jjifaic/uefa_champions_league_2020_results.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/gvjfjju/goat_simulator_goat_city_bay_trophy_locations_ipad.pdfIn PDF document text
    • https://cdn.sqhk.co/toviranevu/gdyigvZ/62494113953.pdfIn PDF document text
    • https://cdn.sqhk.co/rotogogoji/yNfficN/moonpig_flower_discount_code_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/jhiOa0I/cujo_the_coding_robot_toy.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/jhmclij/black_beauty_1971_dailymotion.pdfIn PDF document text
    • https://cdn.sqhk.co/zetikitor/e6khagh/70392036725.pdfIn PDF document text
    • http://philonio.online/41957246252godw2.pdfIn PDF document text
    • http://gonzo-3d.com/nakamichi_cassette_deck_1._5_service_manualk4977.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pasumogebono.rf.gd/affairscloud_monthly_february_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/what_does_it_mean_when_a_guy_winks_at_you_and_smiles.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/pegibov.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/doraemon_adventure_java_game.pdfIn PDF document text
    • http://rajakoxefulume.epizy.com/bobixilogiripajobo.pdfIn PDF document text
    • http://lusalelafujijo.epizy.com/botonija.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC7 5508 bytes
SHA-256: fd66f66a5b97dbf9f70505b3497387fd1a23e3471439372cba7b242c8707fdde
font_01_sfnt_off0001005e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005E 9768 bytes
SHA-256: f9933b4911dc3831922434e0033261791a02d9f2f17027b9f0b42ccd3f485d2c

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