Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b6405eddfaab55b…

MALICIOUS

PDF

64.0 KB Created: 2021-02-21 02:44:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3b66e4d4bafa1cd75146141c72a718fd SHA-1: 683f7c7f49172121276513e150cde07ff8935dfb SHA-256: 1b6405eddfaab55bbe523b598bb8ee35b693822869e4a4bade78e6c842cb5d1f
126 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
  • 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://druttle.ru/wix?keyword=mrs+turner%2527s+restaurant+puyallup+washington PDF link annotation
    • http://hardcreditcheck.info/limits_calculus_worksheet_with_answerste11v.pdfIn PDF document text
    • https://cdn.sqhk.co/gifexajed/hEvYgfU/vejinawol.pdfIn PDF document text
    • http://joblanc.xyz/crash_fever_ultimate_guidebvm4v.pdfIn PDF document text
    • https://tajuzoliv.weebly.com/uploads/1/3/4/3/134359899/waros_latalevelewaju_lutovofamuxofa_zobarigofubodi.pdfIn PDF document text
    • https://gijosugomigul.weebly.com/uploads/1/3/4/3/134317853/nowusozulupelotusat.pdfIn PDF document text
    • http://nuviteb.22web.org/what_is_an_interesting_fact_about_video_games.pdfIn PDF document text
    • https://joripipebepif.weebly.com/uploads/1/3/4/1/134131856/funasewabebatej.pdfIn PDF document text
    • http://golomashvanna.xyz/28208590994k1uf6.pdfIn PDF document text
    • https://lazekikobetilof.weebly.com/uploads/1/3/4/4/134443651/pijomagozidado.pdfIn PDF document text
    • https://cdn.sqhk.co/guletema/SjjhVia/comic_blood_link.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jekopavopi.rf.gd/gagekifubaz.pdfIn PDF document text
    • http://durunorutap.epizy.com/order_receipt_email_template.pdfIn PDF document text
    • http://zukavinu.rf.gd/wazaxo.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_off0000bcb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCB3 5316 bytes
SHA-256: fe089ff299c530462f28c30e11ca6b940e0cd06c434ebd1302bb62e33ed74c7f
font_01_sfnt_off0000ceeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEEB 10608 bytes
SHA-256: a33b26f967be6811f9a3d80418966b1c6e37a0bf596d2f8dd9622d2a29406157