Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d5b7973408b5a7…

MALICIOUS

PDF

75.6 KB Created: 2021-02-04 02:04:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 04e30cd7d98f5a69eb6d425b46f3d15a SHA-1: 6efa43aaf7ec32a288d4759a300cb48e31e378df SHA-256: e7d5b7973408b5a76b063b80cbb6e35c1cb248001fcc4bd4352151f3f323a1eb
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=calisthenics%20workout%20routines%20pdf In PDF document text
    • https://cdn.sqhk.co/jasurisunav/jcCRmSS/poughkeepsie_dmv_address.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424040/normal_600a041aed58d.pdfIn PDF document text
    • https://cdn.sqhk.co/tiruxugajo/Gihkv6D/heroism_pathfinder_2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496616/normal_5fed93593c875.pdfIn PDF document text
    • https://cdn.sqhk.co/zikonidenijo/KqggdBi/jadedejibe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418385/normal_5fd32d0485640.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392472/normal_5fde9b66a7e3c.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/jA1iceN/22759318248.pdfIn PDF document text
    • https://cdn.sqhk.co/waxipefimafa/jbjcn6J/deemo_reborn_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/76cKLQJ/truth_or_dare_2018_common_sense_media.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/ie6YkFt/79033904369.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/hd9VXGk/hd_video_status_download_for_whatsapp.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/tgjiihY/juwipuxozutu.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/rodigapigeta/lometiribamutuluvesosi.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/programa_para_unir_gratis_online.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/guwanorogurisedewo.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/cbse_class_12_datesheet_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/size_guide_fashion_nova_jeans.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_off0000ecf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF5 5304 bytes
SHA-256: bdd1586aab316702303ce531442331cce43c384dc5d81a155adf11fa67fe9f1b
font_01_sfnt_off0000ff07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF07 10044 bytes
SHA-256: 6b3c526ce4e4d5b1aac941328c4e2699d6bf219bd357db28fe5e328ac555c8ce

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