Malicious PDF — malware analysis report

Static analysis result for SHA-256 346418aeb5765399…

MALICIOUS

PDF

76.1 KB Created: 2020-11-22 05:36:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b782397c7b32163693f92a703902fbf4 SHA-1: 858ade9410631dab9e3499c5072020b88e455ec9 SHA-256: 346418aeb5765399e9479ba608e88a00cade003c796a01fbab0d6c6f33258d29
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/aws?utm_term=androides+de+dragon+ball+z+nombres In PDF document text
    • https://cdn-cms.f-static.net/uploads/4474445/normal_5fb2f06d4965f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379241/normal_5f8fe333d064f.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/mefadedosuw/caltrans_travel_guide_chapter_12.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37297f56-b0a9-4ca6-b58e-698d593822cd/instrucciones_para_jugar_monopoly_fo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad768462-1dd2-4bab-b1b8-3b1519988238/23353662964.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b650309f-c249-4d43-80cf-1abe0916468a/vegan_grocery_list_ideas.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/72898336572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/436265c6-66de-4f68-9c90-78b718437b25/osrs_oziris_ironman_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/b._sc_chemistry_syllabus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08f67ee2-a541-4aeb-aeb8-721d34e6e9d5/55624832741.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/candlelight_carol_john_rutter_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/sap_bpc_10._1_embedded.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79baab70-afe5-4861-901a-c77bd7c6be2c/twitch_tv_dot_com.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/cancellation_form_planet_fitness.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15b23886-f880-4934-8783-36e97aa97321/didiropizajuvimiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e797917-4c6e-4fdb-aeae-6129e3260982/pogil.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/child_video_songs_telugu_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66cc3aa5-6fff-469b-9a78-bb478500163f/kozefagonelome.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_off0000eb58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB58 5324 bytes
SHA-256: 43bcbbf989125fb1811c9cca4667ad81ace74477902398e146584f4ab159b091
font_01_sfnt_off0000fd5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5E 11468 bytes
SHA-256: 99cbf9769ef9a4d3a29863312be209f08c092caa92f805ebfc79128aea2dad52

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