Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9db342511fc1732…

MALICIOUS

PDF

73.3 KB Created: 2021-02-20 20:41:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a3d9be3c2c8395bc9d4a76f3ba723851 SHA-1: 348c337954edc3d0a74575b01e6a54dd6d632569 SHA-256: c9db342511fc1732e6750b6c0ad2386c4e93a316340ce02955b755e8632a4458
136 Risk Score

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/123?utm_term=do+recipients+of+social+security+get+the+stimulus+check PDF link annotation
    • https://cdn.sqhk.co/tinolefowi/B1ibheH/45337731221.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447880/normal_5ff04907ac995.pdfIn PDF document text
    • http://liko-sneakers.com/project_management_case_studies5doqu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456134/normal_60282065d3ede.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/djewic4/chat_americanas_sac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455902/normal_600fe9792a6e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528260/normal_601717734a892.pdfIn PDF document text
    • http://tryraisins.club/ost_brilliant_legacy_crazy_in_lovesy3ul.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/tamil_christian_songs_free_mp48h5wd.pdfIn PDF document text
    • https://cdn.sqhk.co/besogevipadi/bjdiajj/53219367631.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/kujapomib/my_beloved_world_chapter_summaries_sparknotes.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/diary_of_a_wimpy_kid_rodrick_rules_full_movie_download_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/sipusifipexaxizovug.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/tts_ebook_reader_android.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/spreadsheet_format_file.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/allen_bradley_1794-aent_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/rejula.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/35171056602.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_off0000e037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE037 5596 bytes
SHA-256: fc3a02ce85d58a3b17493b62b1009ca471304605d04f294153b7cc1a1ec5d6b9
font_01_sfnt_off0000f323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF323 10672 bytes
SHA-256: 023d4cc1f08efefa86584b4fc4e410261ea7117bb9944f71c3322be75fd16f06