Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1cb18d44559b991…

MALICIOUS

PDF

77.5 KB Created: 2021-04-04 19:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3ddccd142f8c769dacbcdb7c5a966179 SHA-1: 88dc573d520ae65ae7e75957ce1363bd434e1247 SHA-256: c1cb18d44559b9913640eb9dd77a7a3f14092a727fbde8c2609d74edfe95161a
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 0.9998

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://ponafet.ru/aws?utm_term=cuanto+es+en+centimetros+3%252F8+pulgadas PDF link annotation
    • https://cdn.sqhk.co/savunowudob/gIqNu3Z/22000079424.pdfIn PDF document text
    • http://bogavevi.22web.org/concierto_de_aranjuez_sheet_music_piano.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/bnUohhK/lab_escape_game_walkthrough_padlock.pdfIn PDF document text
    • http://sejojus.iblogger.org/53328047961.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/jihc3es/strategic_leadership_definition_business.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/j2hemib/somodajokalusi.pdfIn PDF document text
    • https://cdn.sqhk.co/vojazodelud/idhDJWi/21869980108.pdfIn PDF document text
    • http://xuwajofona.iblogger.org/spanish_grammar.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/eeKo2hc/12174844479.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/ghcJjgx/need_for_speed_rivals_ps4_cheats_money.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b35ac43-167c-4267-bd1c-a3f232927da4/48545792184.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/fundamental_of_accounting_principles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fa3a08f-20dd-42c7-8ed1-8f17264d11bd/jadezulabodidetotozeba.pdfIn PDF document text
    • http://vekoxoke.epizy.com/tamil_tv_serial_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fa10a96-3101-440a-a01f-d451ee46557b/fuvavajefasixusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9a44019-781b-491f-b2ca-8b1ee8f4f7f8/75232727792.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f57e99fe-6b16-4e6b-a10e-8051c04e021b/joxemapipefujowibo.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/48631483338.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/8417889626.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6ED 5692 bytes
SHA-256: 0bd69fe191349bc187c6b89b84e3977ff02a2c345dc6fbfdfd5aeafa8e2c5aa2
font_01_sfnt_off0000ea35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA35 12492 bytes
SHA-256: 755fbe77db880da401595871b853dd5c4131ab02a8440e3466714ec50378e561
font_02_sfnt_off000111f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111F8 16100 bytes
SHA-256: e8be64a599b4775abf69106d1ea2a605297721d8ccc8071fb3d67c702b09cfa6

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