Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8f0b6da0fade988…

MALICIOUS

PDF

81.0 KB Created: 2021-03-24 16:25:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 514ca978ecdf4b9c05526c659ebb99bd SHA-1: 57fe82c87d14c18c4c91a58a3214ee9630b693da SHA-256: a8f0b6da0fade98828b089b12589c9f51550ce3cf93c4284993bbe706c6fd2c4
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI pointing to 'lozipotod.ru' was extracted, suggesting a phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and embedded URI strongly indicate a malicious intent to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/wix?keyword=hoa+sen+menu
    • http://nulatapukedu.scienceontheweb.net/wapowojipisafalozaso.pdf
    • https://static.s123-cdn-static.com/uploads/4415327/normal_5ff14f28a30b2.pdf
    • https://cdn.sqhk.co/kugorazig/hchfpSC/15907045745.pdf
    • https://cdn.sqhk.co/sutazojawote/Tgjgjje/mercado_pago_colombia_tarifas.pdf
    • https://biwazasidatuf.weebly.com/uploads/1/3/4/3/134373857/9290065.pdf
    • https://static.s123-cdn-static.com/uploads/4495694/normal_5fee8a879e351.pdf
    • https://cdn-cms.f-static.net/uploads/4454821/normal_604621661d2be.pdf
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/5a781f4bfaa.pdf
    • https://cdn.sqhk.co/bajipugotox/jgKidqV/domain_checker_api_free.pdf
    • https://wabiwuwisurukim.weebly.com/uploads/1/3/2/6/132682822/koponekanedogu.pdf
    • https://cdn.sqhk.co/gorokipo/mFjNOif/joxajogip.pdf
    • http://ruluzuzadol.mypressonline.com/mesez.pdf
    • https://cdn-cms.f-static.net/uploads/4403414/normal_601f56b5168c2.pdf
    • https://cdn-cms.f-static.net/uploads/4481278/normal_6048c701cb492.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://5b2b9875-3923-4577-9ef6-0527498c95e7.filesusr.com/ugd/4e6dd5_5b4ad2af997145019b257b13568018bc.pdf?index=true
    • https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_9e6df312e41749aebefc105a312475f7.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2eb40530-8594-439c-b903-5c042da37a4f/how_to_fail_at_almost_everything_and_still_win.pdf
    • https://uploads.strikinglycdn.com/files/c5d09cdd-7b9c-4811-a9d0-98dc45392bf5/berserk_manga_ending_discussion.pdf
    • https://uploads.strikinglycdn.com/files/0945dc4c-9ed9-4973-88a6-a812ea62faab/how_would_you_describe_emersons_tone_in_this_essay.pdf
    • https://uploads.strikinglycdn.com/files/9334bf42-6ffc-459b-9510-a143f5107d87/what_is_the_standard_normal_distribution_table.pdf
    • https://e0eedba4-cf99-4c42-97f5-d3f9ae5832dd.filesusr.com/ugd/e36ea7_8ba53cd16a384210ae62630f93452ad4.pdf?index=true
    • https://bb0106b8-f3e0-414b-a873-a0e24df3f2ad.filesusr.com/ugd/b84a33_5ad5d5e2fb4140468fd1352a1d3d605b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c185c6fc-7c1b-4efd-a4bd-baa016678e4b/pizujerupujisa.pdf
    • http://mojozore.myartsonline.com/gazodezilutebuwusevogoku.pdf
    • http://jamenajiko.myartsonline.com/ejercicios_resueltos_de_caida_libre_y_lanzamiento_vertical.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7b8.bin
319ef44a68632da58f8455a3d61ba3a1012545fa42e98c01af468e41058e44b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B8 4420 bytes
font_01_sfnt_off0000f689.bin
92c70aea6221b1866a0efe7af55c3055a0dbcbf88872ce8a727229428517a858		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF689 22128 bytes
font_02_sfnt_off00012730.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12730 4324 bytes

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