Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3bcf870cff20258…

MALICIOUS

PDF

76.4 KB Created: 2021-04-04 04:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 9e86db17ca859c273b6b6d790b3318f9 SHA-1: dc0da4bb157ec693d2f0bde139bb904ad407f0df SHA-256: e3bcf870cff202587c9af19b2dcf90ae77f35d8e8c77bd6b4044b76d062f33cd
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting a phishing or malware distribution attempt. The document body, though obfuscated, contains text related to search queries, indicating a lure to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xajibur.ru/wix?keyword=weather+in+highlands+nc PDF link annotation
    • http://pojapir.mygamesonline.org/65100475353.pdfIn PDF document text
    • http://giwudogor.scienceontheweb.net/70361813777.pdfIn PDF document text
    • https://cdn.sqhk.co/guposidum/ifWdFtV/momirifibowom.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/hihbigx/thriller_hollywood_movies_in_tamil.pdfIn PDF document text
    • http://jobware.pro/how_to_say_care_center_in_spanish6qxnz.pdfIn PDF document text
    • http://forexgeeks.net/cecil_textbook_of_medicine_26th_editionpo4n2.pdfIn PDF document text
    • http://amorexpo.com/what_is_the_power_of_one_pieceo99i8.pdfIn PDF document text
    • http://podjem2.club/secuestrada_anna_zairesq6s46.pdfIn PDF document text
    • https://cdn.sqhk.co/muvenetu/gijfZvE/male_hair_style_image.pdfIn PDF document text
    • https://metolokinazez.weebly.com/uploads/1/3/1/4/131452743/4602266.pdfIn PDF document text
    • http://fumuroruzej.medianewsonline.com/english_alphabet_practice_sheets.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/Coljfza/20686375296.pdfIn PDF document text
    • https://sasanufodokedu.weebly.com/uploads/1/3/0/9/130969760/luxijupuxexu.pdfIn PDF document text
    • http://musc-media.xyz/watch_alone_together_pinoy_movie_online_free5t2oq.pdfIn PDF document text
    • http://wobafobigo.mywebcommunity.org/polalupepodizafe.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://pepadubod.rf.gd/basic_algebraic_formulas.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/81633712688.pdfIn PDF document text
    • http://taditejob.rf.gd/how_to_cancel_or_freeze_planet_fitness_membership.pdfIn PDF document text
    • http://toxifiv.myartsonline.com/global_blockchain_benchmarking_study.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/amazon_instant_video_movies.pdfIn PDF document text
    • http://funawazepepu.rf.gd/mokabunefemafokezinili.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/business_cooperation_proposal_template.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_off0000dfde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDE 4892 bytes
SHA-256: 48449b0d55d38a13c7b5f073c3842d53869a606c715d5f71523dda2d1dbced7c
font_01_sfnt_off0000f077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF077 11012 bytes
SHA-256: 38be0ca3e2b9f199ac5d78bb7208911afa8aec742aba9cee4072fccbba6fb6ef
font_02_sfnt_off0001163e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1163E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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