Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b45b85b2e10290a…

MALICIOUS

PDF

61.8 KB Created: 2021-02-05 08:20:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ea9c3fdd1f16ffdf1273c7c0f39aeaad SHA-1: 83bb40bf40a6bb690b904bccf100cb5ad1c75f87 SHA-256: 7b45b85b2e10290a2b8fbe11d61538b6cb1724c1023f63bb5811b55cc543bb64
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wb?keyword=infant%20botulism%20case%20report%20form PDF link annotation
    • https://cdn.sqhk.co/mawedabe/vphcHjb/star_wars_galaxy_of_heroes_characters_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/bipuzojafa/Ydr5ifR/online_bill_check_punjab.pdfIn PDF document text
    • https://cdn.sqhk.co/jesupasuzoku/ddiiaja/troubleshooting_beats_pill.pdfIn PDF document text
    • https://cdn.sqhk.co/nivatasob/haYKgdG/38145470039.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/ijlha0q/idle_highway_apk_mod.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/wizedumi/basic_english_grammar_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/58774796672.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/arabic_style_english_font_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/rabaronukigofinofawof.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/sufifiderivukasunezapuf.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/admin_template_laravel_5._7.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/responsive_bootstrap_carousel_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/fikobimi.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/9211711140.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/mac_preview_form_font_size.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/75118374960.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/55606438782.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/fortigate_50e_admin_guide.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_off0000b6d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6D6 5236 bytes
SHA-256: b3a92a18de4958285b2d27620d6cf3b982ed0f541867bf653f645cdb3d297082
font_01_sfnt_off0000c891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC891 9832 bytes
SHA-256: 2a3a7659445debea42249edc3b0b77b94f2f3547233abb9b74a7939d9a12b065

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