Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e143c045c19dadb…

MALICIOUS

PDF

73.8 KB Created: 2021-02-27 07:35:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 29693f9608fe97356cfcd160b11154e8 SHA-1: 316538da8ec4bd3df355d5186c2c5a92618bac2f SHA-256: 8e143c045c19dadba79f60d9873cf5c0ae3dd00a4724697ba2cc19b8b7a899c0
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'maypoin.ru', which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, contains text related to 'Stihl trimmer fs 130 parts diagram', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/strik?utm_term=stihl+trimmer+fs+130+parts+diagram PDF link annotation
    • http://bimoriz.getenjoyment.net/unix_shell_scripting_languages.pdfIn PDF document text
    • http://mstmail.space/havoc_demon_hunter_mythic_guidelc724.pdfIn PDF document text
    • http://duplicwcnj.space/gitalelekogezikukebomowu2h474.pdfIn PDF document text
    • http://tesocoin.online/zbc_hla_buledfs.pdfIn PDF document text
    • http://nekuwagibajese.getenjoyment.net/lenovo_ix2_quick_start_guide.pdfIn PDF document text
    • http://tonedomopoja.scienceontheweb.net/kenmore_he2_plus_front_load_washer_repair_manual.pdfIn PDF document text
    • http://erogancolumbia.site/80489035944dugdv.pdfIn PDF document text
    • http://shopsmmv.site/blank_periodic_table_editableibdh6.pdfIn PDF document text
    • http://popularchoice.space/pupekilitotidelujazotojybj4k.pdfIn PDF document text
    • http://teasmall.space/los_juegos_del_hambre_parte_1_repartob5pvs.pdfIn PDF document text
    • http://vifezitenof.getenjoyment.net/94270387522.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/roxawo/22544917752.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/55365932063.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/the_leftovers_season_1_episode_8_review.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/25338718298.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/jll_financial_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/uga_bulletin_instructions_and_worksheet.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_off0000e0a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A0 5916 bytes
SHA-256: 1da25d236d28f32ab3bc210b3612f7332691c51e1958362b56fca15de127712e
font_01_sfnt_off0000f498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF498 11532 bytes
SHA-256: 4b43a41b7ae40cf91615a3a3d8bcb22197297d05e9e85347bf131e932e836597

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