Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd1a21bf03f3ff6…

MALICIOUS

PDF

71.1 KB Created: 2021-03-08 12:31:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 33fe91c5f7e215e46afd5b8db86bd8eb SHA-1: c9652c5777308046c7b3a855bb7e6cc521cea3de SHA-256: 9bd1a21bf03f3ff6d5a80f67d86a85e5669788eef2aa4c9833edf940afd98914
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/award?keyword=bible+download+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367290/normal_5fe58fd949451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449973/normal_6031476d27b3a.pdfIn PDF document text
    • https://cdn.sqhk.co/lipebefaje/gOiihcK/lomonudotika.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456166/normal_6007374f3fdf5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471513/normal_5fdfc89823aaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426090/normal_5fdb872897c4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427273/normal_603d545f1d57e.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/hbiidia/clash_of_zombies_2_heroes_game_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415767/normal_6002808a1dc63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413718/normal_5fd1bb66dee7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380411/normal_5fd67f0443273.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/suzujewa/75089352832.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/what_do_developmental_delays_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87238317-13d5-41c0-a515-2c1c7c660b01/attack_on_titan_season_3_ending_1_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ac50a58-92d6-4f32-8dd5-e9e478cfb34f/what_was_marshall_mcluhan_famous_for.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e6706f0-5c8a-4b96-bdbf-1bce6e2ff8d5/46654104128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3c2febe-2596-4a7d-bb2f-4f935b3206f3/big_java_solutions_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/851cd8dc-54f1-4b1b-8fe5-64a9f3e2b175/kou_means_in_japan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/841fe178-5cbe-4bf0-8297-02fb9bc9d8cf/how_do_you_use_a_digital_temple_thermometer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12a2ddb0-04d7-41fc-b8dd-ce11812ef4ff/what_is_the_gender_and_development.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/75353959485.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/72397433826.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/more_speak_english_like_an_american.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_off0000da87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA87 5040 bytes
SHA-256: 1b8c36eee10c9334ec7a5ac1b1506d3f1f532eeb74f2a41a806054f7d8767b13
font_01_sfnt_off0000ebd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD7 10428 bytes
SHA-256: 88406c15990d31f794c2c2bc4a3281acdb6f69c115d428b8a12259b9288c29a6

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