Malicious PDF — malware analysis report

Static analysis result for SHA-256 62762d7e8b1b07c0…

MALICIOUS

PDF

75.2 KB Created: 2021-03-03 02:26:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 7694e8303d31d83b32e37efc6d942c70 SHA-1: b6a263f77a2de1dbedc1626ff128538f2363f115 SHA-256: 62762d7e8b1b07c009f1b7d974e519b3d4a4b6c17cc1888e2c88c3885a43c665
176 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a lure related to a washer repair manual, which is a common tactic for phishing or malware delivery. It includes multiple suspicious links, one of which redirects to another PDF hosted on a different domain. The ML classifier and ClamAV detection strongly indicate maliciousness. Although no scripts were directly extracted, the PDF structure and embedded links suggest it's designed to lead the user to a malicious payload or phishing site.

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
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://gimoguvi.ru/wix?keyword=samsung+vrt+front+load+washer+repair+manual PDF link annotation
    • https://cdn.sqhk.co/rifebonapesi/geG8efx/66316221054.pdfIn PDF document text
    • https://cdn.sqhk.co/sovajepuxe/5jcjgl5/moomoo._io_official_discord.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414173/normal_5fda03088b00d.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/gcojhjf/rapezaxivelogedovoga.pdfIn PDF document text
    • http://prazdnikprosto.ru/how_much_does_an_operations_manager_make_ukdugue.pdfIn PDF document text
    • http://fuckfrsky.com/un_tranva_llamado_deseo_pelicula_completa_subtitulada_en_espaol8ubos.pdfIn PDF document text
    • http://mon-cmso.best/how_to_open_a_sentry_safe_cash_boxc83ns.pdfIn PDF document text
    • http://netewe5.xyz/95030222684te2kd.pdfIn PDF document text
    • http://managerprogram.live/merge_dragons_wonders_sellhm2xr.pdfIn PDF document text
    • https://cdn.sqhk.co/batitiviz/5hbAfsj/cut_it_out_meme_gif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375890/normal_5fd3223fa5177.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/vapelurowar/51481342146.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/technical_team_lead_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/44245428499.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/akira_movie_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/commando_1_game_utorrent.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/horizontal_asymptotes.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_off0000e84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84A 5712 bytes
SHA-256: bf8373ea29ae210664beda0454ddb22aaead4dfc1f8021d24ec5da76978e228e
font_01_sfnt_off0000fba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA7 10424 bytes
SHA-256: d1c0e23a5c46d8ecc82ef134fd94d3ee8495e9725053ad444a7a184856d748d3

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