Malicious PDF — malware analysis report

Static analysis result for SHA-256 094c9f8b305fd4d6…

MALICIOUS

PDF

80.2 KB Created: 2021-03-19 20:43:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 19f4f5bc0f530733e720a7ed99f429fd SHA-1: 9ff6a98f57fcf61228ac3463fe7f45a22899c8fd SHA-256: 094c9f8b305fd4d6fd24f80767301190e360330eccf286e1e4016691d4f1aab0
126 Risk Score

Malware Insights

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

The PDF document is classified as malicious by ML and ClamAV, and exhibits characteristics of a link farm on disposable hosting. It contains numerous embedded URLs, with the primary malicious URL being fokemale.ru, likely intended to redirect users to phishing or malware distribution sites. The document body, though heavily obfuscated, suggests a lure related to children's nutrition.

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/award?keyword=habitos+de+alimentacion+saludable+para+ni%25C3%25B1os+pdf PDF link annotation
    • https://cdn.sqhk.co/felinavaw/gcxigIQ/zibip.pdfIn PDF document text
    • http://jiwimejikigigu.mywebcommunity.org/zujumenedisulebiwuw.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/hPhahhh/mekonu.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/NhfMhfB/zeponinejawiwa.pdfIn PDF document text
    • http://bopugafuwu.scienceontheweb.net/50068796630.pdfIn PDF document text
    • https://cdn.sqhk.co/judigirowe/inidjas/81093857943.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tokudapele/free_sales_quotation_template_doc.pdfIn PDF document text
    • http://zudagedat.epizy.com/83443636750.pdfIn PDF document text
    • https://79ab8074-8148-4faa-9219-f6cdfa35bc15.filesusr.com/ugd/99e004_d7088663d150437bbaafb3e4150cd0d1.pdf?index=trueIn PDF document text
    • https://850a36a1-966c-46c3-86ed-e15bcb5778a7.filesusr.com/ugd/ede58b_5844ddde0f2b4efb8699b266557ae4b9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zikeko/gafaxipoxizosenedenexen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e49e84ef-8f76-4856-8066-fbecb5eb59f9/what_is_the_instrument_used_to_measure_rain.pdfIn PDF document text
    • https://77a48bbd-706a-45f8-a225-ac1cc02029d7.filesusr.com/ugd/3be48b_2d7ba4e7bacd4221b4ebf96ae5f7e1f7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xulikamul/digital_marketing_manager_jobs_in_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c6ae44f-1b94-43ce-9633-33db13fa7976/programacion_neurolinguistica_en_ventas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f42d41a-6f26-4d4e-af0c-226c78b6d374/jipixokuzapizozobibininer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b21b398b-4b50-4412-be3a-a67072d6a5ee/how_to_install_petsafe_basic_in_ground_fence.pdfIn PDF document text
    • http://fiwipofel.epizy.com/58431103821.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9856c834-bbd0-4e93-a179-a819910c987d/60578645490.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/business_budget_planning_excel_template.pdfIn PDF document text
    • https://7648721b-06f4-4917-9c2a-921156fbbd07.filesusr.com/ugd/a7266c_80962d119e5b4e7f985ef124738b8e0d.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_off0000f765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF765 5612 bytes
SHA-256: fbfced3c329955921e7a8e8f4bdf53cedb4bd7d1f989e8bad03f29f965847eeb
font_01_sfnt_off00010a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A15 11964 bytes
SHA-256: cb50b871e00f2e74ee604d7ea0aa01785c675aac25d6427c2344e496941b0c22

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