Malicious PDF — malware analysis report

Static analysis result for SHA-256 a92964c45feb56c9…

MALICIOUS

PDF

60.4 KB Created: 2021-02-13 08:34:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0d679bd6f97828d372b011f3081fd304 SHA-1: 6b6cd5ef049704a199dc1a12fc0efe32d10ae5b8 SHA-256: a92964c45feb56c947ff9a1b2aa6a6d6473be8c729bdfddd4b286807c6628658
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/123?utm_term=wida+can+do+descriptors+grades+6+8 PDF link annotation
    • https://muvanuxeb.weebly.com/uploads/1/3/4/0/134096654/xugezepexufaw.pdfIn PDF document text
    • http://kopavavabigi.66ghz.com/lg_g7_android_9_new_features.pdfIn PDF document text
    • https://serataxufo.weebly.com/uploads/1/3/1/6/131606193/11da670f3568.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/jJhbhcg/gorokuli.pdfIn PDF document text
    • http://antinomi.design/soldiers_of_fortune_2_torrent45lew.pdfIn PDF document text
    • https://vezutokabev.weebly.com/uploads/1/3/4/7/134758566/8fc05336.pdfIn PDF document text
    • http://gexuniganije.iblogger.org/english_to_tamil_dictionary_apk_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401712/normal_5ff9c4c33168d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370073/normal_601fde7450f48.pdfIn PDF document text
    • https://cdn.sqhk.co/xojurolaruk/ijbHPtd/faxotoripibevav.pdfIn PDF document text
    • https://cdn.sqhk.co/wesaduleb/bmls8Vn/fakulutisukelelalavenoli.pdfIn PDF document text
    • http://dazenad.iblogger.org/57492911904.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gawebunopom.rf.gd/41425101034.pdfIn PDF document text
    • http://rotitow.rf.gd/subject_pronouns_worksheet_with_answers.pdfIn PDF document text
    • http://negavutagogo.epizy.com/bilderbuchkino_mutig_mutig.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_off0000b227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB227 5568 bytes
SHA-256: 5c380df8668cd5bb19f39ccdd5fa22f4f525f9a4fcc3450eef373055af213c71
font_01_sfnt_off0000c527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC527 9280 bytes
SHA-256: 65b465b7db0ea6b8f4deb94d1fbead06d078180ffa3dc71c8a2c6871ce1ac526