Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0dab94f352a6d17…

MALICIOUS

PDF

97.6 KB Created: 2021-03-12 06:14:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: df612cef9e634a736cb79a5698a5ca6e SHA-1: bc5928426656131928f143f342ba0ed485d4699d SHA-256: b0dab94f352a6d1790556b9b6a04d9001dff2e33b82327ca3d9ca6e2e839d246
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of multiple external URIs, including one pointing to a link farm on disposable hosting, suggests an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, contains keywords related to financial reports, likely serving as a lure.

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://pelibifir.ru/award?keyword=reliance+industries+limited+annual+report+2020+19+pdf PDF link annotation
    • http://maxirem.mygamesonline.org/what_oil_does_a_2006_honda_civic_take.pdfIn PDF document text
    • https://cdn.sqhk.co/kusewupudin/02GxUwu/54258915726.pdfIn PDF document text
    • http://momentshop.space/pekaraxidikenoxumno.pdfIn PDF document text
    • http://folugomobok.getenjoyment.net/ms_project_2019_fr_mac.pdfIn PDF document text
    • http://waxopuvuru.22web.org/how_to_pair_bluetooth_headphones_to_lg_sound_bar.pdfIn PDF document text
    • http://pinezotamex.getenjoyment.net/39417815259.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/85366005251.pdfIn PDF document text
    • http://wutanumijejol.sportsontheweb.net/marlin_60_22lr_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/cggX3hg/ripozebikaduxu.pdfIn PDF document text
    • http://cheapestshop.xyz/17952971663q3ztj.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
    • https://s3.amazonaws.com/duzexefemosaxe/jackson_hole_wyoming_snow_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/fefafilozutif.pdfIn PDF document text
    • http://retexibew.rf.gd/find_the_camel_alzheimer_s_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/3d_football_game_pc.pdfIn PDF document text
    • http://labiwuju.rf.gd/kinubivefawevi.pdfIn PDF document text
    • https://7fc1e5b2-1dd8-4457-9de2-3dea1ab9f589.filesusr.com/ugd/fedd61_453ea198e8864083949b9cefa22dfaa3.pdf?index=trueIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_72349799cef4443db7561849c0c0fbd2.pdf?index=trueIn PDF document text
    • http://zotozonon.rf.gd/what_does_a_black_snake_represent_in_a_dream.pdfIn PDF document text
    • https://6212e4db-e997-417a-85c6-ca69de056bb1.filesusr.com/ugd/e2f197_0d55e2a91eaa4ac382d9980e6e1901ba.pdf?index=trueIn PDF document text
    • http://dogabofeki.epizy.com/amilum_manihot.pdfIn PDF document text
    • https://fb1cd387-549b-40f1-a5a4-67fd65d29bb3.filesusr.com/ugd/4200b4_17a5eb274b5b4309823740a30bd3b781.pdf?index=trueIn 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_off000123e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123E5 5672 bytes
SHA-256: 25231c7838113eb6f69317a05e02dda37a415a58a1e5f2bfee85825cab9952a7
font_01_sfnt_off00013711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13711 16180 bytes
SHA-256: edad2b81e1726464bc92e317996a4999791ac2d34488c68ed29be64d9037bdad
font_02_sfnt_off000168b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168B3 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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