Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2fffc8690ac23e9…

MALICIOUS

PDF

81.0 KB Created: 2021-03-16 09:28:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 8997c6d55751612b66152924acd8ca1c SHA-1: 7b4bb1d5f23ceaccdb6d5507696a837bbce77020 SHA-256: c2fffc8690ac23e9fabce320eb40516c97aa3fec8a015e72c954474fa5e14ca5
126 Risk Score

Malware Insights

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

The 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 pointing to disposable domains, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, references a 'parts catalog', which is likely a lure to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://botokaw.ru/strik?utm_term=1996+jeep+cherokee+parts+catalog PDF link annotation
    • http://pusolaxunu.66ghz.com/glacier_bay_faucet_parts_home_depot.pdfIn PDF document text
    • http://kismykeitio.best/colour_wheel_app_for_clothesbpdcv.pdfIn PDF document text
    • https://cdn.sqhk.co/vexavudakepa/h9gjieO/10020484132.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/15205180723.pdfIn PDF document text
    • http://shopwithsale.website/jatubepetogizovetinubozr4u3j.pdfIn PDF document text
    • http://nomanodix.iblogger.org/construction_master_pro_calculator_app_for_android.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/anguttara_nikaya_sinhala.pdfIn PDF document text
    • https://cdn.sqhk.co/reparepoki/hbidmBp/splendor_in_the_grass_complete_poem.pdfIn PDF document text
    • http://bizelapeto.iblogger.org/93572223044.pdfIn PDF document text
    • http://dezowem.medianewsonline.com/archetypes_and_motifs_in_folklore_and_literature_a_handbook.pdfIn PDF document text
    • http://barbanapoli.moscow/how_to_get_your_lean_body_massf1fxw.pdfIn PDF document text
    • http://mixit.info/maxi_cosi_mico_ap_basenvcp5.pdfIn PDF document text
    • http://rokamik.iblogger.org/asphalt_8_game_android.pdfIn PDF document text
    • https://cdn.sqhk.co/woguwubege/iiifidE/remaining_games_for_liverpool.pdfIn PDF document text
    • http://zemegazi.22web.org/violin_sheet_music_popular_songs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kipinoda.rf.gd/ielts_writing_answer_sheet_british_council.pdfIn PDF document text
    • http://xosevijus.epizy.com/brownie_home_scientist_badge_placement.pdfIn PDF document text
    • http://kenesowozowojaw.myartsonline.com/how_big_do_boesemani_rainbow_fish_get.pdfIn PDF document text
    • http://vomifavub.epizy.com/43674424289.pdfIn PDF document text
    • https://ded05c8b-f0d8-42bc-a64b-daa0b63394ca.filesusr.com/ugd/99afdc_bdae0a2945b2472182dad2f5dd226796.pdf?index=trueIn PDF document text
    • https://7ffe38df-ef78-47a1-8632-a9c579db478a.filesusr.com/ugd/8ff694_818406f8022e43508162240eef30ef36.pdf?index=trueIn PDF document text
    • http://nopexuwub.rf.gd/face_report_link.pdfIn PDF document text
    • http://ligoroxenafof.atwebpages.com/calendario_2020_para_imprimir.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF300 5236 bytes
SHA-256: 7aae1a3b1e8be69f69e7a1a72609d2cbf9d8689c01427498acae2ff83881bb37
font_01_sfnt_off000104ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104EA 10472 bytes
SHA-256: 904ccbb905730b948955382efc09d0d16f08b25850cc05838c289595622c5b0c
font_02_sfnt_off00012869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12869 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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