Malicious PDF — malware analysis report

Static analysis result for SHA-256 e688e3495d6a75d6…

MALICIOUS

PDF

72.9 KB Created: 2021-02-01 08:53:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a7c77cb8bd457777ed24195260b897ce SHA-1: bdfc4bf511a9148ff2a5df3756c5a7f90f58e4ba SHA-256: e688e3495d6a75d6b75fda17822fb717350ec09e0f13eee720b36992ae95e610
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://seumenha.ru/aws?utm_term=girl+guides+enrollment+ceremony PDF link annotation
    • http://summ-ita.space/27947891718cwqtm.pdfIn PDF document text
    • http://makamar.xyz/radufupepijuxokilq2j4.pdfIn PDF document text
    • http://fruitik.space/strategy_profile_game_theory_exampled42iv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454421/normal_5feeba91cc2e4.pdfIn PDF document text
    • https://cdn.sqhk.co/liripudeb/ihichgY/46926841202.pdfIn PDF document text
    • https://cdn.sqhk.co/javukapegami/ikib7jg/application_support_mobilesync_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/zovigobut/ojijav3/zetukozewazenujus.pdfIn PDF document text
    • https://cdn.sqhk.co/zexoribuj/0je2jjY/58978851055.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486368/normal_5fdd3e8d53416.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_5fd7d4d882941.pdfIn PDF document text
    • http://topstudy.fun/godefejazexi2ts8i.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/gotitibekovi/58145811207.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/free_receipt_template_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/bixexetemobemop.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/share_chatting_apps.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_off0000e14f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14F 5184 bytes
SHA-256: d07cb000a57022e9f336f9ef559af49434142f99fbcef4f387034320666a770c
font_01_sfnt_off0000f2eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EB 10452 bytes
SHA-256: 4d28d53852bed458cf9580f06ee4207f841ad4d4070f1346c6f67bae938ecbd3