Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6ff3467e355e073…

MALICIOUS

PDF

76.0 KB Created: 2021-03-12 21:09:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a8e8dba00d12415349e16b95069e333f SHA-1: 1523c52f50c06f44675858b48bed61abf2272091 SHA-256: c6ff3467e355e073f1d4fd5e456a73649588cebf8231c7b04d6546c993a99f5a
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 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=black+friday+tire+sale+2015+date PDF link annotation
    • http://leftoutclub.com/shopsmith_scroll_saw_reviewym5eh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502870/normal_5fc68cb70ed53.pdfIn PDF document text
    • https://cdn.sqhk.co/puzukebejas/g01wgDh/54016229078.pdfIn PDF document text
    • http://store50off.info/autosar_sws_bswp24n8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446374/normal_60410f01990f9.pdfIn PDF document text
    • https://cdn.sqhk.co/najuvotuwoz/ShhVhjJ/49373437076.pdfIn PDF document text
    • http://raisinshq.club/general_ledger_chart_of_accounts_templateyhumi.pdfIn PDF document text
    • https://cdn.sqhk.co/porosobof/kFNxgiL/84939190927.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413696/normal_5ff85b2e8264f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403823/normal_600ca135a40dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wurasegato.rf.gd/wajipogolimusolumamikedi.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/english_tagalog_dictionary_apps_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/bhu_bsc_nursing_entrance_exam_form_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/dirajimovis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dbb0a5b-5d4c-4c31-b289-625d42046af1/basketball_inbound_plays_for_youth.pdfIn PDF document text
    • http://pesixogid.rf.gd/pathfinder_2e_gamemastery_guide_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4efcbc2-0f30-4ea2-a031-ac5ca810ac8d/will_pretty_little_liars_be_on_hbo_max.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69ab37f1-fe9d-4502-bbb2-c1bec8663474/1_metro_cuantos_decimetros_son.pdfIn PDF document text
    • http://nezixaleweku.epizy.com/zadozekopurikilonagesa.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/tabla_periodica_de_los_elementos_quimicos_nombre.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/zipujivomejiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd144dda-56ad-4a64-a9b6-5b02257db049/biblia_textual_sociedad_biblica_iberoamericana.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_off0000eae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE2 5680 bytes
SHA-256: 37ba242305710a56abb0423b707eccf55108d34c8d7fceddf401aae5d46e98dd
font_01_sfnt_off0000fe66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE66 10672 bytes
SHA-256: 6c72dc2fc88726f4a6c1cb1010d39bbda789ae2e0b2f37bbc46b453b6ed1a0f7

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