Malicious PDF — malware analysis report

Static analysis result for SHA-256 032349a6f7d831b1…

MALICIOUS

PDF

87.4 KB Created: 2021-05-10 13:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7cebd5a3cd58ac425e60d55fa502467a SHA-1: 5bfeb4114ca3c3ab0576316cf2b875310bc71506 SHA-256: 032349a6f7d831b1d080285e6c9711062db9557ac68154173a8c9916fcadb56b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=the+series+of+unfortunate+events+pdf+free+download PDF link annotation
    • http://alex-chekalev.com/11265407544a7ttu.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/jbhfP4r/17835925220.pdfIn PDF document text
    • http://igcopyrightverify.com/36623371786wpp5n.pdfIn PDF document text
    • http://vizit.store/farmer_giles_of_ham_first_edition4f7rb.pdfIn PDF document text
    • http://esclick.pro/how_to_join_wood_together_without_nailsa0wdl.pdfIn PDF document text
    • http://wusuraxirobi.iblogger.org/asus_maximus_viii_hero_price.pdfIn PDF document text
    • http://ru-1.casa/652573238023g43n.pdfIn PDF document text
    • http://true-board1.club/battery_charging_appsca50w.pdfIn PDF document text
    • http://copyrightshelpcenter.com/343312023505jpwn.pdfIn PDF document text
    • http://formblckr1.xyz/89939863081cxks4.pdfIn PDF document text
    • https://cdn.sqhk.co/kidatufo/gcQ878G/nexus_gun_range_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/sanobude/WggpMhe/practical_report_format.pdfIn PDF document text
    • http://sulogajifuv.iblogger.org/value_of_roses_book.pdfIn PDF document text
    • http://xtrading.buzz/97254343676i3ygp.pdfIn PDF document text
    • http://pocki.top/pewepupimasikomagofax2ngad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/malorozejodezu.pdfIn PDF document text
    • http://wulevizoreb.epizy.com/91098092248.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/fall_foliage_japan_2018_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/best_constellation_map_app.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/how_to_fix_a_leaking_whirlpool_refrigerator.pdfIn PDF document text
    • https://19d8af67-ac20-4a7c-8ffd-69be953788a8.filesusr.com/ugd/578741_5b6fa205392043dc8bda3be2dc843d16.pdf?index=trueIn PDF document text
    • http://zazupixuwup.rf.gd/chalkboard_regular_font_free.pdfIn PDF document text
    • https://d848e4b6-662b-4424-a759-963270729452.filesusr.com/ugd/30e015_1e5aec17c6644156bcc2cc8f46d1b28f.pdf?index=trueIn PDF document text
    • http://tefokubekaxo.rf.gd/adobe_portfolio_templates_free.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_off00011517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11517 5232 bytes
SHA-256: a3fc5f06894fdd7f4a72a319c034bab4d0e2ce8325d142a3202f6a1ceb54f4a1
font_01_sfnt_off000126f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126F1 12736 bytes
SHA-256: 0fe80eb0c1ad3867188004cc7b08dd11465db3f6232487750a50ea702e507bad

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