Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db064f523f2713c…

MALICIOUS

PDF

74.4 KB Created: 2021-05-18 00:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 8a38efef2c422c4c8a302066be4274cf SHA-1: 2463020fe07b514b1a4f9081d70be31d358a0e23 SHA-256: 6db064f523f2713cc4943d5ee59377fea4beaf6a05607a012a97e2c72faefb14
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body, though heavily obfuscated, contains text related to 'Neco physics past questions and answers pdf', likely a lure to encourage downloads. The embedded URL 'https://xezojetit.ru/strik?utm_term=neco+physics+past+questions+and+answers+pdf' is the primary indicator of malicious intent, suggesting a phishing or malware distribution 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://xezojetit.ru/strik?utm_term=neco+physics+past+questions+and+answers+pdf PDF link annotation
    • http://pojesuwemi.iblogger.org/sql_query_format_in_ssms.pdfIn PDF document text
    • http://pelopof.iblogger.org/vuxekejusaxilanabikinasi.pdfIn PDF document text
    • http://nujinedopidil.iblogger.org/23935795782.pdfIn PDF document text
    • http://pevokepavaxe.iblogger.org/79541542201.pdfIn PDF document text
    • http://kosodidaxelo.22web.org/60833594173.pdfIn PDF document text
    • http://zuvilivupeke.iblogger.org/mojijulon.pdfIn PDF document text
    • http://tadaziwazifumiw.iblogger.org/ligezajamakev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xeroxuzowi.epizy.com/apa_bulleted_outline_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d566c86d-f642-4ba1-868b-f74cddb3463a/how_to_turn_off_a_firex_smoke_alarm.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/44748728057.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29368585-b471-4db6-a823-1b5ddbc01235/learn_hindi_in_30_days.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/big_buddy_heater_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/shankar_ji_ke_bhajan_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bea6b03-1f1c-43c9-9215-d150dc67b358/59997790925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/375acdc3-922b-4a97-a58d-efd47361b166/la_odisea_resumen_del_canto_11.pdfIn PDF document text
    • http://rofijig.rf.gd/13971414296.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/mofop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6c28035-f3f1-45f8-941b-31069a74b940/62983570299.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bea2c372-1ad0-406d-a7e2-287ea3f5aa44/98382009355.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/877f8f36-5a7d-4f5f-973b-d9e4edcf44c4/dias_feriados_en_2020_mexico.pdfIn PDF document text
    • http://muzudamufuvase.rf.gd/beatles_yesterday_sheet_music.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_off0000e386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE386 5500 bytes
SHA-256: d7b9a036327ae41f5b0bcb189499178f311c686a75d8c31c3dd0b4fb39ae2eb1
font_01_sfnt_off0000f654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF654 11208 bytes
SHA-256: 264c0c465f9295c1f3ee1151feb8b4596e3261d3eb803219b18cf659b353093d

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