Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0bcbb539b6b6da3…

MALICIOUS

PDF

73.2 KB Created: 2021-02-14 20:05:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3a55cfaf50e5b1f37c042e895bed3d9a SHA-1: 54bfb0bbbc7f0f40e7538c447efb7fdabac98d61 SHA-256: b0bcbb539b6b6da379e4d47d8b76dde740f08b1cc31fc1fa18d346ecc6aaba71
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/123?utm_term=mass+volume+density+worksheet+6th+grade In PDF document text
    • https://cdn.sqhk.co/depifozopupe/WXWcnK3/revuwaworixud.pdfIn PDF document text
    • https://cdn.sqhk.co/zebimapajod/gfgjijV/dragon_ball_gt_opening_espanol.pdfIn PDF document text
    • http://gopumapi.iblogger.org/42812425016.pdfIn PDF document text
    • https://cdn.sqhk.co/laripikiwafo/pIihCgj/grocery_shopping_list_ease_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464715/normal_60016ab02bb6f.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/Hfji9jg/34112566558.pdfIn PDF document text
    • https://cdn.sqhk.co/fudamozomeb/jaigCha/59216537593.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393625/normal_5ffefcc8771ce.pdfIn PDF document text
    • https://cdn.sqhk.co/totuzilexif/GBjdiiu/pineapple_pen_apple_pen.pdfIn PDF document text
    • https://cdn.sqhk.co/bemovunilupo/2p6gfia/simple_tv_cabinet_design_for_bedroom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453718/normal_5ff23f684fd7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457318/normal_5fdba7bc093fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420924/normal_60145a64afbea.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/buxoparadazegu/action_sheet_metal_roofing_gold_coast.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/auto_clicker_android_6._0_apk.pdfIn PDF document text
    • http://wereguvepowu.epizy.com/siximuwimirozamawa.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/91611653653.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/53543920317.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_off0000def3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF3 5716 bytes
SHA-256: 20edc8f75d4797b84296814573a070b130d6442553b3f38667c73e97d8e40bda
font_01_sfnt_off0000f266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF266 10960 bytes
SHA-256: 2d760fd963a335ed1f0ad1812ceb65045b9499d7d470be681029b454d6ad08aa