Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d807114c61cc1c…

MALICIOUS

PDF

71.0 KB Created: 2021-02-28 07:08:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0bbbdc2a30df8f84a1c16c52c31f98e3 SHA-1: 3f26d7ce7d30315f335724cfb746f555069d5c84 SHA-256: d5d807114c61cc1c92228f78eb6f9226e03c512a195d55d387aa064c65b33c1b
186 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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://resalured.ru/award?keyword=what+to+do+if+your+echo+dot+won%2527t+connect+to+wifi PDF link annotation
    • https://cdn.sqhk.co/joduragenep/gg4Knld/91160082740.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427793/normal_5fcee03395ee0.pdfIn PDF document text
    • http://imedo.ru/lurijomisevikajal0hfds.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/organic_chemistry_exam_papers.pdfIn PDF document text
    • https://cdn.sqhk.co/rawewosit/ighejj6/video_downloader_firefox_android.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/Fghia2D/braiding_hair_salon_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/lekibefefu/jiiijb2/art_history_through_the_ages.pdfIn PDF document text
    • https://pagajunudew.weebly.com/uploads/1/3/5/9/135992687/metupevabirizab.pdfIn PDF document text
    • http://present-mag.ru/does_motley_fool_have_penny_stocks70jfy.pdfIn PDF document text
    • https://sijudunewofas.weebly.com/uploads/1/3/4/6/134696620/7c584925c2ce3c.pdfIn PDF document text
    • http://jefevivavifax.scienceontheweb.net/fifty_shades_of_grey_moviescounter_download.pdfIn PDF document text
    • https://boxatikavizag.weebly.com/uploads/1/3/4/6/134680825/majotarimanuj.pdfIn PDF document text
    • https://luzusuzure.weebly.com/uploads/1/3/0/7/130775685/4e389e8f70d49b5.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/nezanurugega/chennai_express_songs_isaimini.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/synonyms_worksheet_grade_1.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/6622350708.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_off0000daa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA4 5140 bytes
SHA-256: 3709b24c8e318a2e4ca969ae824b5e74ae197571710387335acacc446ef517ae
font_01_sfnt_off0000ec44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC44 10148 bytes
SHA-256: 574f1cb859ffdaa1da2884f2dd43a0fb61add256df84eedb3421b43fe23b8051

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