Malicious PDF — malware analysis report

Static analysis result for SHA-256 9caa081c790e4cda…

MALICIOUS

PDF

75.6 KB Created: 2021-05-01 20:41:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: d5f7cef63f7e1456a7aff76d2624a4b8 SHA-1: 5e0e8f94a880b449919d4de548ecc7853e86a42d SHA-256: 9caa081c790e4cda366650b90578ce6905842b0c3c562407e27c35831f3ef61f
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to redirect users to malicious content. The presence of a URL with a 'utm_term' parameter suggests a phishing or scam attempt, masquerading as search results.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/strik?utm_term=1997+ezgo+golf+cart+steering+problems PDF link annotation
    • http://dmdmassage.com/what_causes_bank_1_and_2_to_run_lean7hgvk.pdfIn PDF document text
    • http://dragonflysagewellness.com/31574590135s0626.pdfIn PDF document text
    • http://lnstagramsupportlives.com/business_plan_sample_template_freew7rlo.pdfIn PDF document text
    • https://jijutuvexezepor.weebly.com/uploads/1/3/4/4/134444828/jawivirimavesokoka.pdfIn PDF document text
    • http://demask.space/how_to_mentor_coach_and_build_teams_that_workdktjh.pdfIn PDF document text
    • http://uuuuull.space/bonfiglioli_vectron_act_400_manualyi1g4.pdfIn PDF document text
    • https://turabevov.weebly.com/uploads/1/3/0/9/130968962/5134663.pdfIn PDF document text
    • http://mscgis.net/tales_from_the_loop_season_1_episode_3_musicoyz8p.pdfIn PDF document text
    • http://mon-cmbretagne.com/aimbot_apk_critical_ops63gmy.pdfIn PDF document text
    • https://ferizovewop.weebly.com/uploads/1/3/4/8/134887996/7667203.pdfIn PDF document text
    • https://kapuwibipu.weebly.com/uploads/1/3/0/9/130969563/jamemoturopo_kabiwibi.pdfIn PDF document text
    • http://zosazufinur.mygamesonline.org/38794403387.pdfIn PDF document text
    • https://fibuwusosa.weebly.com/uploads/1/3/4/7/134700524/remopekiloga-garifez-pifolugug.pdfIn PDF document text
    • http://tosefabebiribow.scienceontheweb.net/68146098933.pdfIn PDF document text
    • https://vigekajabaka.weebly.com/uploads/1/3/4/7/134708837/984437.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/american_gods_season_1_parents_guide.pdfIn PDF document text
    • https://dizuvojuxi.weebly.com/uploads/1/3/1/1/131163617/6258853.pdfIn PDF document text
    • http://cardioactiveitalia.site/ludanitopalutama6kuqn.pdfIn PDF document text
    • https://wimegipovuxu.weebly.com/uploads/1/3/4/3/134373819/a62125fd4.pdfIn PDF document text
    • http://alfa-quest.ru/el_caballero_de_la_armadura_oxidada_resumen_del_capitulo_4j2bri.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/b7c331fc-d9cb-4559-b36d-991583c21ad8/tp-link_tl-wr841nd_configuration.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/275f127b-48a0-4a15-b0c5-98be11cbbd78/how_to_light_up_a_furnace_in_minecraft.pdfIn PDF document text
    • http://wokidomogu.onlinewebshop.net/catalogo_truper_2020_descargar_gratis.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_off0000eac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC8 5716 bytes
SHA-256: e315a594254764e3b5becbc5f235975c73c7606c70f0257e0a43949dc1d0997a
font_01_sfnt_off0000fe3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3E 10212 bytes
SHA-256: 922117cf32d8c768beafd2d6d6ba34bdeae40f2d5f0173383e5bb08045f1b89b

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