Malicious PDF — malware analysis report

Static analysis result for SHA-256 02b8ba5bc94eddf5…

MALICIOUS

PDF

76.6 KB Created: 2021-02-11 10:47:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2afc1ced80d4d6da013c9b50bd0ff33f SHA-1: 80501e56ef8894672a8f04fb9cf9b08868adddac SHA-256: 02b8ba5bc94eddf5a7f44eec475a7bed97a789bb3767afaed78680ca96dfcedf
96 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. It contains an embedded URL that mimics a search result, likely intended to trick the user into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect the user to external resources, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/123?utm_term=huntsville+state+park+swimming PDF link annotation
    • https://cdn.sqhk.co/tezofugowura/qvLjjic/vodafone_yan_mda_uygulamas_n_indiremiyorum.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/eGYifij/hitman_paris_sniper_assassin_master.pdfIn PDF document text
    • https://cdn.sqhk.co/munuzimevu/zpRq7jd/70899955149.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/gh3wjaR/free_skins_for_among_us_mobile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379731/normal_5fcd576879352.pdfIn PDF document text
    • https://cdn.sqhk.co/kisesawaropo/5hbhkhi/volutopijaduzekajifomexu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369932/normal_602187c81ccdf.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/4iaijGU/25795767467.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483337/normal_601ee6d42aece.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/hjib6gf/risunadelile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498404/normal_5fedabb57004a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/91171848779.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/probabilities_on_algebraic_structures.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/mhgu_insect_glaive_kinsect_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/galanixuxugoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/emathinstruction_geometry_answer_key_unit_8.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/51751283523.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/volkswagen_beetle_2010_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/airborne_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/61277636442.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_off0000ed40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED40 5316 bytes
SHA-256: 4ae0601d7899b02b7c6ca94a92b6dc2b56db6d622a75f6b7743a3ab4d8061ace
font_01_sfnt_off0000ff58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF58 11000 bytes
SHA-256: 21e357352026b33548fef8c71c6ce8d5b163e02c11b16d802c5ef320c2e869a7

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