Malicious PDF — malware analysis report

Static analysis result for SHA-256 a335d3ebdcbb3298…

MALICIOUS

PDF

57.6 KB Created: 2021-01-31 00:52:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a59e00b8a7067f668c2ec384de1bd10d SHA-1: c2073cd963793437bc7fe437d348614c0c4f2590 SHA-256: a335d3ebdcbb329837bd8d20fb9795aa0b83e22c63f3e32bc5f952c7988cc877
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wb?keyword=ncaa%20stats%20hockey%20elite%20prospects PDF link annotation
    • http://pihodze.com/classklap_learning_app_downloade175u.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxudofexal/eTzgdIz/97700414076.pdfIn PDF document text
    • http://uaportal.site/tiktok_ban_datefrasc.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/hRia5id/foweju.pdfIn PDF document text
    • http://topstudy.fun/bomatogewuxapau6gqq.pdfIn PDF document text
    • https://cdn.sqhk.co/fefuxumito/bjivG5L/wonafudagevukuwen.pdfIn PDF document text
    • http://instapriz24.online/cross_chain_wallpaper_for_iphonegxzz0.pdfIn PDF document text
    • https://cdn.sqhk.co/dulinifijal/hhdgihd/42856428050.pdfIn PDF document text
    • http://japancar-sib.ru/hola_amigos_textbook_answerscvs4a.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/1hd6hj9/86288942823.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/resisuna/varuwan.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/free_bootstrap_ecommerce_html_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/65708903942.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/71525684926.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/tolotabekarazorakilux.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_off0000abb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABB6 5156 bytes
SHA-256: c6d6924dd49a32310b347db141a9212acff5b515ad880bff4072045bf939889e
font_01_sfnt_off0000bd45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD45 8384 bytes
SHA-256: 61dc5bf075b8d322d7c97063826366216c70f07d8ddad1eac96fcf20233152b6