Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a08bc86ffc530df…

MALICIOUS

PDF

80.4 KB Created: 2021-03-25 16:11:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 20a5dc7bcf0cccfc4908f74f1c00c13a SHA-1: 587170d196324b3e01ec034eeb9b69cea4a9b228 SHA-256: 8a08bc86ffc530dfbce34f0d10e73797907f7a41c134cbfc5e16f290f01f56bd
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing operation. The primary URL, https://fokemale.ru/strik?utm_term=what+are+the+elements+of+horror, appears to be a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/strik?utm_term=what+are+the+elements+of+horror PDF link annotation
    • http://redirerer.medianewsonline.com/wexesadavu.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/51368713913.pdfIn PDF document text
    • http://govnosiakxws.online/dragon_age_origins_quest_guidevg0sx.pdfIn PDF document text
    • http://help-business-media.com/drivers_log_book_template_freean421.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/cheap_parrot_bluetooth_headsets.pdfIn PDF document text
    • http://tixaman.scienceontheweb.net/21044867021.pdfIn PDF document text
    • http://astrohelp.space/funny_quotes_wallpaperj0pm4.pdfIn PDF document text
    • https://cdn.sqhk.co/vinogusi/2mgd1SN/soccer_heads_unblocked_games_6969.pdfIn PDF document text
    • http://pokemonrivals.online/byju_s_the_learning_app_online1yuc1.pdfIn PDF document text
    • https://cdn.sqhk.co/fumodolanes/hihftgf/bujasubowilajeworibusukig.pdfIn PDF document text
    • http://verifedform.com/tukumixebovddem8.pdfIn PDF document text
    • http://sosiwawivijomo.scienceontheweb.net/jolejajud.pdfIn PDF document text
    • http://silujokiz.mypressonline.com/acca_paper_f1_accountant_in_business.pdfIn PDF document text
    • http://riniwodifole.medianewsonline.com/angles_of_polygons_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lijulipewagikev.rf.gd/latest_bongo_songs_2018_free.pdfIn PDF document text
    • http://taxifegizuni.epizy.com/khadya_suraksha_form_rajasthan_2020.pdfIn PDF document text
    • http://pusapovewazigu.onlinewebshop.net/how_to_be_a_better_husband_book.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/consumers_report_best_air_fryer.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/definicin_de_artes_plsticas.pdfIn PDF document text
    • http://gurabagoderes.atwebpages.com/63795368621.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/ford_ranger_raptor_spec_sheet.pdfIn PDF document text
    • http://ragomoxos.rf.gd/mewejudepobamumes.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_off0000fe3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3D 5020 bytes
SHA-256: f175eddbb360f5ec84ed2978295da4af78eae8cdd7b2cc8b586cec2e7a133c56
font_01_sfnt_off00010f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F2E 11164 bytes
SHA-256: b5fda06b2f555c40dfdbbedf34739944d1a916c784556e28c189b25b6f3eeb5c

Open this report in the interactive analyzer, or submit your own file for analysis.