Malicious PDF — malware analysis report

Static analysis result for SHA-256 e58a1cb9371861db…

MALICIOUS

PDF

67.6 KB Created: 2020-12-17 19:51:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: b8d472bafca30017d36efaeabdb1f415 SHA-1: 206c3eba484de399a9efadce075ad3b62c22e489 SHA-256: e58a1cb9371861dbea27197c92b59459c5a98c96ecb2612898bd366d662a9580
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffmen.ru/123?utm_term=uscg+auxiliary+uniform+manual In PDF document text
    • https://xobawaxotax.weebly.com/uploads/1/3/1/4/131453143/xexamokige.pdfIn PDF document text
    • https://mowazaxof.weebly.com/uploads/1/3/4/7/134704653/957724.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467278/normal_5fb520ff53b7a.pdfIn PDF document text
    • https://mixidesurujof.weebly.com/uploads/1/3/4/9/134902607/xisax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c9b6084-fa5b-455a-bcdc-8197756e488b/poresakemoziwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c869a6bf-1dae-414c-bca9-31a4c5e6a568/15509228779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e3e2d66-fab0-45b9-8a41-43622654c5e3/49912291302.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79625cb936d6a06aa469d/t/5fd1e3d5eeaf2774ac8f986e/1607590870631/the_lightning_thief_summary_chapter_9.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc002e7e5c7695ca996b6a8/t/5fc532a53f75b166437bf7fe/1606759077567/belosalolojag.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe19233f75b166439d65c4/1606293796210/myinstantoffer.com_promo_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/711483f1-cc45-4f30-8617-21cbe0b6496e/70268596904.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a86766c-052d-4287-ba12-ffc4111ec7c0/xononi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/325e318b-db71-4678-b628-7f104c70d8c5/marumotizitebaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11d1e4cb-9e6a-405c-bf48-40554f99f157/97623461074.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc33495affbf90a66f9667f/t/5fc3fac5e6d49a06bb0d9f59/1606679238333/clash_of_lights_s2_apkpure.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_off0000cb8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB8D 5364 bytes
SHA-256: d27a2eec4c42a69d9bc4779717656243f0f8d1467940f08e87f857e61a0137a6
font_01_sfnt_off0000ddc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC7 10452 bytes
SHA-256: a5378e1a16815054d34e0ec0a33970c69c035b666ce8d5f9e0e6d1c55807b154

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