Malicious PDF — malware analysis report

Static analysis result for SHA-256 435f58a9fe773b58…

MALICIOUS

PDF

71.5 KB Created: 2021-02-25 16:46:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a5e39002e47d098460a65ea55f473b68 SHA-1: f1f0d2941e9120e3e70b4e62fd431fbaa04a1108 SHA-256: 435f58a9fe773b58fe264dff3515db6a09352990dea99364eb432108dc1408fd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=form+and+space+in+japanese+architecture PDF link annotation
    • https://cdn.sqhk.co/jifigetuxu/dun9yOV/hollywood_action_movies_2018_and_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/hdhdhap/vikings_game_time_today.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482413/normal_60203de687f76.pdfIn PDF document text
    • https://cdn.sqhk.co/bufudoraxala/qV9hcgi/msc_for_me_app_funktioniert_nicht.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_601de277a1dde.pdfIn PDF document text
    • https://cdn.sqhk.co/jezuleku/hjhjk7x/tower_color_online.pdfIn PDF document text
    • https://cdn.sqhk.co/dogovonediwa/hctihia/82728192171.pdfIn PDF document text
    • https://cdn.sqhk.co/wibetaxor/bgeifZf/temovube.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/gchhjjj/royal_chaos_heir_classes.pdfIn PDF document text
    • https://cdn.sqhk.co/babijuvawov/32SaZcJ/sudoku_247_expert.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390074/normal_5ff6ab9b9fa7b.pdfIn PDF document text
    • https://cdn.sqhk.co/zokuwagopole/jigxkjg/12339111568.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404523/normal_5fce8a38b0cf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462985/normal_60219404d4044.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/sajezife/mokife.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/smart_android_tv_box_media_player.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/20391972398.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/23659608110.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/beagleboard_x15_schematic.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/bewiwupofox.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_off0000dbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDD 5312 bytes
SHA-256: 1087b598b0c38d24c1f061c123a13bc910f6e0726cb470a42fb0911aa99b9a89
font_01_sfnt_off0000edc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC6 10228 bytes
SHA-256: 26da47012b543347ad6ad63a5968d9dfff1bcd2e29ef08f706d40cb12579ce62