Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb01b572f1cbe24…

MALICIOUS

PDF

70.6 KB Created: 2021-04-02 00:35:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c0cac24e1bf9a32992d4dc87eba67c41 SHA-1: e7d4af124457fda6480cda1ecf2788ed21dd7711 SHA-256: 2fb01b572f1cbe24495c6f593d022817a4f88752f96a5fd29f5dd5b5a171ade9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/strik?utm_term=brother+2270dw+clean+drum PDF link annotation
    • https://cdn.sqhk.co/xudevekelefe/fmfgi39/top_popular_ringtones_romantic_2020.pdfIn PDF document text
    • https://nogulakotu.weebly.com/uploads/1/3/0/9/130969216/3527118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_60415e5ee6179.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388620/normal_605d56cb53b15.pdfIn PDF document text
    • https://cdn.sqhk.co/genonitag/BJjhPu6/capitalism_definition_simple.pdfIn PDF document text
    • https://tulizeboposun.weebly.com/uploads/1/3/2/3/132303370/9b8738176c5f73.pdfIn PDF document text
    • https://cdn.sqhk.co/dasofuduveje/ghgcxrq/gb_whatsapp_plus_2018_new_version.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465543/normal_6065eaa4b0f8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424029/normal_60417dbfa67d9.pdfIn PDF document text
    • http://govnososal.xyz/94521760019djtft.pdfIn PDF document text
    • http://presentinsta.site/hp_laserjet_p1006_driver_download_for_windows_7_32-bitvedv0.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/planets_in_the_sky_tonighthy3xg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5fc6819f6cfe9.pdfIn PDF document text
    • https://cdn.sqhk.co/limexofure/2jgO4OZ/microsoft_excel_monthly_attendance_sheet_template.pdfIn PDF document text
    • https://cdn.sqhk.co/wafudovop/ibJqjb2/fivelelamotobu.pdfIn PDF document text
    • http://mosquito.codes/autocad_mep_2016_user_guide46vk1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a63fe22-d7df-4a8e-8204-9d8c6d3f2530/bai_hat_xin_vang_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2fb48d9-6dd3-49ea-82e7-8dd7e6271b1d/govupuzoja.pdfIn PDF document text
    • https://01477de9-116b-42a6-a62c-54244336611e.filesusr.com/ugd/dea9e9_955617e96ecf47839d14ad5d7fad23cc.pdf?index=trueIn PDF document text
    • https://2178e3ec-2e0a-46e0-af35-d8a6fdfeb21a.filesusr.com/ugd/c411cf_5854df7e3c5d4b4182fb0a5e7723814f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed049a85-da68-4b42-82a9-8c883794f5b6/les_miserables_25th_anniversary_cd.pdfIn PDF document text
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_48b3bec247f54b55b54907d7b6344662.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD782 5496 bytes
SHA-256: 04ba0db4be3fe3b39622f382c67088f4d62023430e8a3319eb38a074dda49f75
font_01_sfnt_off0000ea1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1D 10200 bytes
SHA-256: 286cf9ce11e9231d081ea399e7d5e27938673e04dae38425d0c526d573118df8

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