Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f8e0a12af8da24…

MALICIOUS

PDF

80.9 KB Created: 2021-03-25 07:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 39c99b2615e0413944beeee9359fb1ea SHA-1: 23173f532373577405d8780301a2135f691bcb01 SHA-256: 00f8e0a12af8da24b286389d6645117f17cb2579891b83f2b688a73dd83491a4
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 0.9993

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://jottigo.ru/strik?utm_term=the+champion%2527s+mind+amazon PDF link annotation
    • http://raisinshub.pro/fixasamakimikawotusowisij5wn8.pdfIn PDF document text
    • http://jewlgems.com/17414195356wmycn.pdfIn PDF document text
    • http://topstop.site/5334268197815ncr.pdfIn PDF document text
    • http://pearhaidhr.fun/safe_drive_save_life_newspaper_reports04v8.pdfIn PDF document text
    • http://letxxnx.org/free_software_to_modify_documentsdzll7.pdfIn PDF document text
    • http://instofficial.online/vinawujojivoxevesopbima.pdfIn PDF document text
    • http://apsdd54gfv.xyz/root_browser_apkpureju6bt.pdfIn PDF document text
    • http://littlenat.space/zoxavosuwibeti04kyw.pdfIn PDF document text
    • http://lovemecompletely.com/32237471686c31ev.pdfIn PDF document text
    • http://xifamopituwoti.iblogger.org/ignou_ba_assignment_2020_19.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/sijebifnt61p.pdfIn PDF document text
    • http://jipigebewojafof.22web.org/trane_xv95_filter_location.pdfIn PDF document text
    • http://sberetransfer.online/eulogy_template_for_dad_ukxgjkx.pdfIn PDF document text
    • http://titoto.xyz/956983109570hxao.pdfIn PDF document text
    • http://reassurez-moi-fr.info/david_lewis_paradoxes_of_time_travel647y9.pdfIn PDF document text
    • http://laulu-go.ru/salibelosazobin392i.pdfIn PDF document text
    • http://fixmarker.fun/what_is_an_unconscionable_contractg41pj.pdfIn PDF document text
    • http://islandlandscapesbb.com/business_logistics_management_pienaar_vogtugh5t.pdfIn PDF document text
    • http://lalixodurabemu.iblogger.org/38544115443.pdfIn PDF document text
    • http://lixamewura.iblogger.org/bibojawuwuduvukajalazuba.pdfIn PDF document text
    • http://twoup-viktoria.online/kclo4_strong_or_weak_acid_or_basejz6gq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gavenivifi.rf.gd/crossword_clue_brilliance_in_performance_7_letters.pdfIn PDF document text
    • http://xegunapajom.epizy.com/muxubidofelunew.pdfIn PDF document text
    • http://medemamonolusav.rf.gd/82532830384.pdfIn PDF document text
    • http://maruduxelukar.rf.gd/star_wars_ahsoka_book_barnes_and_noble.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_off0000ff4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4F 5216 bytes
SHA-256: 943518635b52e2a9507e8362ef85637fe864148bfcd3a48e0ef094a0b1b90cac
font_01_sfnt_off000110f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110F5 10828 bytes
SHA-256: 8dd8f39ef2a310ea15ef899bb4e4da6848038559d14042877ec05af34fca24e4

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