Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d8b11268aca7f7…

MALICIOUS

PDF

73.7 KB Created: 2021-06-07 03:29:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5034475514b60dbf3960157f07687f9f SHA-1: 5305d773af5686003d48a7546afa5a19d7534686 SHA-256: 60d8b11268aca7f7cdce0e5c31b18d41cfca968f0f92c968bee5ebb8fce67ccc
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 0.9997

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://pixomot.ru/pbw?utm_term=gordon+smiley+death+photos PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4483346/normal_60b948d0d25ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479436/normal_60242d1b7bfa1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455645/normal_606544100ff79.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/6dc13346-2816-48d8-be3a-020769f325fb/16090204415.pdfIn PDF document text
    • http://magogopowo.pbworks.com/f/laiye_je_yaarian_full_movie_free_download_filmywap.pdfIn PDF document text
    • http://lifelekufa.pbworks.com/f/ramadan_calendar_2018_peshawar_download.pdfIn PDF document text
    • http://zivovot.pbworks.com/w/file/fetch/144674856/22312009879.pdfIn PDF document text
    • http://sawebaz.pbworks.com/w/file/fetch/144761409/72245999324.pdfIn PDF document text
    • http://gafuxexosaru.pbworks.com/f/descargar_discografia_completa_de_fito_y_fitipaldis_gratis.pdfIn PDF document text
    • http://kimotamiju.pbworks.com/w/file/fetch/144526716/la_ci_darem_la_mano_from_don_giovanni.pdfIn PDF document text
    • http://joxupakager.pbworks.com/f/65390515144.pdfIn PDF document text
    • http://jetipufagi.pbworks.com/f/kickin_it_full_episodes_season_2.pdfIn PDF document text
    • http://pimepovume.pbworks.com/f/8923958304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb28c6a1-d69b-479e-afff-8cbd01754898/moduwamolavemodedukubez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e777a3c9-4fed-47aa-8e23-027f0b62e243/how_do_i_become_an_affiliate_marketer_for_beginners.pdfIn PDF document text
    • http://giresizuloki.pbworks.com/f/how_to_write_a_departmental_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bebc8f26-4bc0-4282-aac1-1c6345615368/xugufejutelotepal.pdfIn PDF document text
    • http://lopofemusun.pbworks.com/w/file/fetch/144497511/rujigarijafajipun.pdfIn PDF document text
    • http://ruwezebom.pbworks.com/w/file/fetch/144700023/star_stable_hack_generator_2020.pdfIn PDF document text
    • http://bujolajoxek.pbworks.com/f/48872743062.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_off0000e0e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E8 5332 bytes
SHA-256: fae537d0dcd0ca06bc5053a3df0ab5cc14112a817757f7b6d16d50bd5a3f916d
font_01_sfnt_off0000f2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E7 11644 bytes
SHA-256: c9333dbb3199a02af508e2cadd8850d3f0e8cca898602e2bfc8c318bf3114621

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