Malicious PDF — malware analysis report

Static analysis result for SHA-256 237d72eb6335280c…

MALICIOUS

PDF

71.7 KB Created: 2021-03-01 17:44:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 05d54f0f0d218e5849627dfde3db37d3 SHA-1: e4345bdfdd4a5e79879bdb5fcc10c76d16090744 SHA-256: 237d72eb6335280c2e0cd3a590e24770ad5d9194564798fe4745fabd2cb9c0d5
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/wix?keyword=whirlpool+built+in+oven+installation+manual PDF link annotation
    • http://loneresel.mygamesonline.org/98414967721.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/84003327062.pdfIn PDF document text
    • http://desokore.medianewsonline.com/pokagizotapegafaxu.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/73179523479.pdfIn PDF document text
    • http://kemamibuke.mygamesonline.org/24616628569.pdfIn PDF document text
    • http://nitapida.mywebcommunity.org/lemony_snickets_a_series_of_unfortunate_events_pc_game_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490369/normal_5ff8933e00c24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379220/normal_601c65e973859.pdfIn PDF document text
    • http://nusowutevu.getenjoyment.net/how_to_clean_printer_head_hp_deskjet_1510.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467318/normal_5ff1b7ac3a092.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/bulujono/what_is_the_most_ugliest_car_in_the_world.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/minecraft_1._5._2_google_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/77440045170.pdfIn PDF document text
    • http://lexuwusifo.epizy.com/arabic_calligraphy_alphabet.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/earthquake_reports_bay_area.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_off0000d524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD524 5272 bytes
SHA-256: 53a098ac5bcd84752b8e1c9a378ee91a0a0c7d215aa08b68f33f8f6f79c44885
font_01_sfnt_off0000e6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EA 13624 bytes
SHA-256: 73b008d0949f6455a337cb31321e825141f922651ca2aea1c84ad706076c5967