Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3dcee396770c14…

MALICIOUS

PDF

73.2 KB Created: 2021-01-24 15:30:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ae814fce93424db3e2311d3816cd264f SHA-1: 6a253a06f7d8ac2a0c8704fce6b8353b0bc180af SHA-256: 9c3dcee396770c1405e006dcd8b9efc155e3049b3a0f89030e1d7bc8e6ddb111
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/aws?utm_term=medscape+for+android+apk PDF link annotation
    • http://gratoramaa.space/rush_hour_2_full_movie_youtubepi57c.pdfIn PDF document text
    • https://cdn.sqhk.co/kofuvufexo/1SmhiHa/download_game_zuma_deluxe_mod_apk.pdfIn PDF document text
    • https://menekagamop.weebly.com/uploads/1/3/4/0/134097565/wasuxatugirefor-gifivurumuwazox.pdfIn PDF document text
    • https://cdn.sqhk.co/jututumogu/4havKKg/515871847.pdfIn PDF document text
    • https://cdn.sqhk.co/jigidokasaga/eyigVCo/ghost_scary_ringtones_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/ZDhchiT/hydraulic_calculation_plate.pdfIn PDF document text
    • https://cdn.sqhk.co/fefuxumito/e3ugiha/32923082679.pdfIn PDF document text
    • https://cdn.sqhk.co/bugininaxi/hDtLjje/92080265143.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/bubeto/ravindra_raj_name_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/lukademedopirab.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/97949559770.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/bahubali_1_tamil_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/solomon_islands_tourism_travel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/ackerman_steering.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/descargar_whatsapp_plus_android_7._0.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/57967075461.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/kesozevewapukam.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/52354902994.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_off0000e18e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18E 5188 bytes
SHA-256: 6c9a4f1fd815246c77ea42ad98512ce9647f99cf17a6138612a58ef544fc5e8b
font_01_sfnt_off0000f35a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35A 10756 bytes
SHA-256: 002e6d71f0aede2bd233bab19cbae5d470de0cc049d7a172dac912b0c1076c40

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