Malicious PDF — malware analysis report

Static analysis result for SHA-256 08835b3437cbad2c…

MALICIOUS

PDF

70.3 KB Created: 2021-03-07 23:52:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 404aee4bbe81dcdcafbaaf96d10afc8a SHA-1: f97b8e9454b08299c01d33a7b71aaf19cf91c2c8 SHA-256: 08835b3437cbad2c1b983a053e3f86af07c76bb0ccd038dd80f34496259a2f2e
126 Risk Score

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://fokemale.ru/wix?keyword=hebrews+study+guide+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427498/normal_603beb7cf0f7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453729/normal_6043f45074d97.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/do_chipmunks_have_stripes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387589/normal_600a3cd86256e.pdfIn PDF document text
    • https://fuxakitedev.weebly.com/uploads/1/3/5/4/135400966/4643101.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387235/normal_600cbceef318e.pdfIn PDF document text
    • https://wezinifagewugi.weebly.com/uploads/1/3/2/8/132815004/7537900.pdfIn PDF document text
    • http://bejuzoz.iblogger.org/scaricare_aggiornamenti_android_senza_wifi.pdfIn PDF document text
    • https://tovibebifenoge.weebly.com/uploads/1/3/2/6/132695438/d179d.pdfIn PDF document text
    • https://bapadiwifujeki.weebly.com/uploads/1/3/4/0/134041393/8787057.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://667b589a-70dd-4c78-a03f-47f6e9f07b1f.filesusr.com/ugd/db80c5_ad267e33386d492a879b05a7d5b7a3fb.pdf?index=trueIn PDF document text
    • https://6cbe2f5c-748b-4bc6-b691-25a968a47885.filesusr.com/ugd/d6b5da_49d60575df9942dcb831129f81cff9cf.pdf?index=trueIn PDF document text
    • https://fa90eb46-aa9b-4fd1-a2e8-e903ec8e50a4.filesusr.com/ugd/575fb0_5b7009fb83434e688ca869ed17778dc9.pdf?index=trueIn PDF document text
    • https://667b589a-70dd-4c78-a03f-47f6e9f07b1f.filesusr.com/ugd/db80c5_6fc80aaca9f5425cb6c52fe5086c0b4d.pdf?index=trueIn PDF document text
    • http://zowofiz.myartsonline.com/dusomajexumeje.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/service_certificate_format.pdfIn PDF document text
    • http://negavutagogo.epizy.com/kafufirusumulav.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/96195227887.pdfIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/marshall_jmp-1_preamp_presets.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/88313745896.pdfIn PDF document text
    • http://jenigaseze.epizy.com/crystal_reports_viewer_visual_studio_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/16021291048.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_off0000d5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F3 5260 bytes
SHA-256: 00766dbaad9ec9386bdd32be453056a4b6b372a7e598348979c52a0cd8a54859
font_01_sfnt_off0000e7fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7FC 10752 bytes
SHA-256: 60ccb55fdb292d1b1681bc6ad5a53bccfe821f3950d1ad9bdad7301284205810

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