Malicious PDF — malware analysis report

Static analysis result for SHA-256 53d7dfafb5f87a05…

MALICIOUS

PDF

77.0 KB Created: 2021-02-27 23:31:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2861085bc48a4533ca71b91857d8f242 SHA-1: 28d70347c47b6800bba80b834114930d26ddb1fd SHA-256: 53d7dfafb5f87a052b64cbde589cbd9beb45dbf4fb3cf76d0210a3a4427c9e43
136 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
  • 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://lozipotod.ru/strik?utm_term=can+you+bake+potatoes+in+an+electric+skillet PDF link annotation
    • https://cdn.sqhk.co/marebilan/iqAgjU4/best_photo_background_editor_for_android_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413867/normal_5ffaa5e56f9ca.pdfIn PDF document text
    • https://cdn.sqhk.co/lilomovetum/BKOhjFl/20735005423.pdfIn PDF document text
    • http://duverupabig.22web.org/jazowexatudufotaxivuka.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/Aih1gjR/52907953616.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/hcdajbY/gun_idle_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvapolaxaj/eidnShb/texas_camping_map.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/jgij9je/healthy_cod_recipes_panko.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/ajjih7t/smith_s_money_center_hours_near_me.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/zuses/mupobugoxufejowajifubali.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/bird_thongchai_song.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/cara_lagu_di_iphone_4_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/11721146944.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/ridawamorosunutufelimig.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/zofubiwibodej.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/nujojatu.pdfIn PDF document text
    • http://tiliken.rf.gd/churchward_design_font.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/discord_logo_template.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_off0000f205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF205 5140 bytes
SHA-256: c329562f3fb33a509bae47bb344538a75f3015dd43f061dce172218de87c3c9a
font_01_sfnt_off00010394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10394 10316 bytes
SHA-256: 9730b5581a80125e236cbef0280cef68cb0f0f2682c8694dae1b722e35a7cfd4