Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a0f9e05308877c…

MALICIOUS

PDF

82.7 KB Created: 2021-05-11 22:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f5314c4372f53eabfe4000ae07ae088e SHA-1: 747d393f378c8548ae68f85b618ea697baf5b8c7 SHA-256: f0a0f9e05308877cb823f9e68d1c9a5ec82dd57f66fe5092c2836b465b364ed9
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-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://maypoin.ru/strik?utm_term=navy+seal+weight+training+workout PDF link annotation
    • http://xivazokib.medianewsonline.com/vanuzakuz.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/614538328.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/hgzhbjj/49790701444.pdfIn PDF document text
    • http://instacopyrighthelpteam.com/what_is_the_purpose_for_an_organizational_structure_in_healthcare_facility0rtc1.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/95327443835.pdfIn PDF document text
    • https://cdn.sqhk.co/puxolika/ahhhhgg/rabujisugab.pdfIn PDF document text
    • https://cdn.sqhk.co/vexedobasof/jh0gjQ2/desigirosarigupepu.pdfIn PDF document text
    • http://flash-sar.online/marevajozogunidusuxebsfozf.pdfIn PDF document text
    • http://xogavuw.medianewsonline.com/tipos_de_sistemas_de_informacion_en_informatica.pdfIn PDF document text
    • http://wersita.fun/will_you_come_and_follow_me_piano_sheet_music0es13.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0491f86b-060d-4f4a-be23-b0d01488777f.filesusr.com/ugd/faa7ef_df61da3f6b15473bbaa0d32a0ac6612b.pdf?index=trueIn PDF document text
    • http://wojibikifi.myartsonline.com/comment_joindre_2_en_un_seul.pdfIn PDF document text
    • http://xunudijumo.myartsonline.com/94808495423.pdfIn PDF document text
    • http://firiwigisu.atwebpages.com/callan_method_stage_5.pdfIn PDF document text
    • http://runuwug.myartsonline.com/sociologia_juridica_unam.pdfIn PDF document text
    • https://a7da3e60-63c8-46c1-a846-eab7df628ed2.filesusr.com/ugd/bba345_9b0fbd625887466e9fca47e946626bf2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f4e26cc-5f1c-4588-8e82-e8f8b836d163/97643396096.pdfIn PDF document text
    • http://sipanokule.onlinewebshop.net/87848714934.pdfIn PDF document text
    • http://megugasawixige.onlinewebshop.net/functions_of_language_development.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5be7e14b-0ab7-4470-9257-6f35ca0c178c/ascii_chart_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e818b4-99b8-4f03-92f9-65ba76a431f2/no_game_no_life_season_2_cancelled_due_to_plagiarism_allegations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4b0234e-9cf5-4691-8820-29804043082f/keviseserefidadafak.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10308 5236 bytes
SHA-256: fe8e9ae54c270881973f0af563ced030b8f1f3f433c69e9fbcf1d0df30084a74
font_01_sfnt_off000114ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114EF 11376 bytes
SHA-256: dfe192d66c4354480e8921f496b0129ac22e229a2f388012a9e09a621b45e6de

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