Malicious PDF — malware analysis report

Static analysis result for SHA-256 156cbdcd7b832189…

MALICIOUS

PDF

80.6 KB Created: 2021-03-23 00:24:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c5f097c9bc5d6277d60508f4e24ad4ce SHA-1: 7110220d5f7ba6da8cc3e2cee7cf025abf9c4eb2 SHA-256: 156cbdcd7b83218981eb776c43fd3ba1355ecc130b05e092197796819549597c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=how+to+find+the+volume+of+a+square+formula PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475219/normal_5fd2601a0adea.pdfIn PDF document text
    • http://xedijama.getenjoyment.net/jeduj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_601af395e82ea.pdfIn PDF document text
    • http://terugate.mypressonline.com/36150996098.pdfIn PDF document text
    • http://wivadanege.iblogger.org/35125701479.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nakixaxev.myartsonline.com/lomobupajelesifuzozij.pdfIn PDF document text
    • http://lofoxos.epizy.com/vobov.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/xawaxinelijorefirupej.pdfIn PDF document text
    • http://fomuzuzidoduvi.epizy.com/what_kind_of_oil_does_a_lincoln_sa_200_use.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/adicionar_assinatura_digital.pdfIn PDF document text
    • http://varijaponinaza.rf.gd/disable_beamforming_orbi.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/rizejenibisufulopupeja.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/how_to_add_schematics_to_worldedit.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/before_and_after_pictures_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/free_handwriting_practice_sheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/entombed_left_hand_path_discogs.pdfIn PDF document text
    • http://dolaregasa.epizy.com/2006_nissan_altima_owners_manual_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/simple_balance_sheet_reconciliation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/33050921210.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/genki_workbook_answer_sheet.pdfIn PDF document text
    • http://solejow.myartsonline.com/bookkeeping_accounting_for_dummies.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0E 5384 bytes
SHA-256: f88aa3cd13251602f368ec88173acec99135a774470f218e99219b851b07b0e7
font_01_sfnt_off00010d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D45 11688 bytes
SHA-256: 4f6a631b979c7fa5e57148553ce53cce94e827a6b15784746f7f793cf693b777

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