Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac9ee673520ee96e…

MALICIOUS

PDF

66.7 KB Created: 2021-02-24 16:53:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fe81e36406c8d7a6dc18090b17e27bf0 SHA-1: 815776f142f0a8c2ccaa464917b081e14be0fe31 SHA-256: ac9ee673520ee96edc8283a33fdfb3e6eeec5c6c097d00f1e5e25181b57807a4
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://maypoin.ru/123?utm_term=how+much+is+smart+siding PDF link annotation
    • http://mosebuzixat.mywebcommunity.org/kugupekuvajibidedis.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/ijR2Fhj/best_free_offline_pc_games_2020.pdfIn PDF document text
    • http://dresdenpharma.ru/gelojo7ontv.pdfIn PDF document text
    • http://artistichomesolutions.com/what_is_wd_tv_live_streaming_media_playerzkqch.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/how_to_set_citizen_eco_drive_watch_gn-4w-s.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/data_structures_and_algorithm_analysis_in_java_3rd_edition.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/mosezavor/introduction_to_hermeneutics_how_to_interpret_the_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/71494247814.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/51620032533.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/sipes.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/pajaxaroneba.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/blog_post_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/descargar_musica_gratis_force.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/indian_logo_quiz_answers_level_3.pdfIn PDF document text
    • http://bodegifu.atwebpages.com/computer_high_level_programming_languages_list.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_off0000c83c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC83C 5372 bytes
SHA-256: d5c59876ccf5b2ecca5d77f0e1280ea9fd13e9d8eb186f6af65d20ab5e8204b2
font_01_sfnt_off0000da65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA65 10508 bytes
SHA-256: af182f715dd7074a93f249631dd5f59eebaceb3991e6901e6a1618c5ab06ec16