Malicious PDF — malware analysis report

Static analysis result for SHA-256 1de7a6fe695b13bd…

MALICIOUS

PDF

73.7 KB Created: 2021-02-10 13:50:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: a6d0b99b602ca89cd6521b504c04b3f7 SHA-1: 30c50ad6c99a0a5a3f0cf1b2dcda2f8077172a73 SHA-256: 1de7a6fe695b13bdaa8a0c555c90fa9bb5690c08e432bce7959a1d1ce17fb382
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/123?utm_term=ernest+the+chicken+rs3+guide PDF link annotation
    • http://wajabub.22web.org/inscribed_and_central_angles_worksheet_with_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487916/normal_5fd806dcefc2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462056/normal_5ff436fb431c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470014/normal_5ffbffc3300e1.pdfIn PDF document text
    • https://cdn.sqhk.co/jugomuzuteb/Ow6Jhgr/3d_printed_concrete_house_mexico.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390068/normal_5fc5d79226c91.pdfIn PDF document text
    • https://cdn.sqhk.co/xaranoraf/jaMPthd/i_remember_lyrics_sondheim.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/jdGrihA/principles_of_management_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vumavoralamo.rf.gd/netbeans_apache_mac.pdfIn PDF document text
    • http://lidazadopedu.rf.gd/directx_windows_10_64_bit_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/ckd_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/ac_market_pro_2018_apk.pdfIn PDF document text
    • http://nijetazum.epizy.com/40951926789.pdfIn PDF document text
    • http://wexugemo.epizy.com/format_of_internal_auditor_appointment_letter.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/wow_affliction_warlock_leveling_guide.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_off0000e470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE470 5144 bytes
SHA-256: a77836fbc2692a78a4092cddc57795675f5e470f26ac50f823ecab10e078d114
font_01_sfnt_off0000f5ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EE 10752 bytes
SHA-256: 55092074de5b97d46308816d597eda84470e3cc96c0c1723955dea17941cb04c