Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b852075b37f7c95…

MALICIOUS

PDF

87.7 KB Created: 2021-02-09 07:32:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c788bc2c041bd61adde39c0998404424 SHA-1: 8ab4d0ed5f194c643f151b39507819899af3bb84 SHA-256: 9b852075b37f7c9560a9c492a4b45b5ce6da5a941fa5d78c85985818b862d5a0
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://jottigo.ru/wb?keyword=interpersonal%20communication%20journal%20articles%20pdf PDF link annotation
    • http://dujerewogirovok.22web.org/xipasaxuwaju.pdfIn PDF document text
    • http://megoribituvu.iblogger.org/detaxafax.pdfIn PDF document text
    • http://vovodofozufora.iblogger.org/all_boishakhi_song_free.pdfIn PDF document text
    • http://nubuweso.iblogger.org/61995739413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410678/normal_601738498c5e2.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/gidijhb/lalabuxopolubat.pdfIn PDF document text
    • http://sandwichhq.club/37869149650wdrph.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411694/normal_5fe621c64754c.pdfIn PDF document text
    • https://cdn.sqhk.co/gitopedevid/j0Gjijj/nhl_hockey_fights_rules.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421478/normal_6021e9287352d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fokogijisigife.epizy.com/que_es_analfabetismo_digital_en_informatica.pdfIn PDF document text
    • http://nokarox.rf.gd/hepatitis_b_treatment_guidelines_2018_ppt.pdfIn PDF document text
    • http://dukedofabi.epizy.com/g_suite_administrator_fundamentals_answers.pdfIn PDF document text
    • http://pagupim.epizy.com/insurance_letter_of_authority_guidelines.pdfIn PDF document text
    • http://vutafinaragod.rf.gd/42682688699.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_off00011708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11708 5316 bytes
SHA-256: c3a283823af814018f54f01931330454061cd3659c6ccf67dcc52f4a96988b08
font_01_sfnt_off00012905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12905 11516 bytes
SHA-256: 9ac0fd319ff3d05138e98a656fc1ada7693fb1bdee2161fd8dcf65fd7d24e7de