Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb014c94a92bf9f…

MALICIOUS

PDF

80.9 KB Created: 2021-04-29 22:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 06ee0424a838d89ff25c4041d3fb3cf1 SHA-1: de4ebb88eba547c68f28eb06e44a027d429165db SHA-256: 1eb014c94a92bf9ffaa5c9591dd94213966c7a88da43259b88a1b2b66efaabd9
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 0.9994

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://vilenefex.ru/strik?utm_term=dash+diet+plan+phase+1 PDF link annotation
    • https://cdn.sqhk.co/sosexazefip/bFhijeF/zepeto_studio_unity.pdfIn PDF document text
    • http://limowoduramu.iblogger.org/carnot_cycle_problems.pdfIn PDF document text
    • http://tefitagesev.mypressonline.com/xevedowi.pdfIn PDF document text
    • http://wekanisa.scienceontheweb.net/rulila.pdfIn PDF document text
    • http://pojibuvuj.mygamesonline.org/us_accent_pronunciation.pdfIn PDF document text
    • https://cdn.sqhk.co/damapegapi/hAa1ibd/72935059932.pdfIn PDF document text
    • http://melofuwi.getenjoyment.net/69817792159.pdfIn PDF document text
    • http://nalodorepuwag.getenjoyment.net/zapitiwabopivutarome.pdfIn PDF document text
    • http://sirunome.mypressonline.com/amparo_directo_civil_ejemplo.pdfIn PDF document text
    • http://torixewiser.medianewsonline.com/why_the_rich_get_richer_and_the_poor_get_poorer.pdfIn PDF document text
    • http://botavubapisod.mywebcommunity.org/242566564.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/teximikamukubo/walmart_department_manager_test_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e79e1fe-7eaa-445d-a686-8c6e0d831558/girevab.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/dollhouse_kits_for_sale_ontario.pdfIn PDF document text
    • http://zukomakiduw.myartsonline.com/duvefuwugufakemi.pdfIn PDF document text
    • http://xuloxaguxeruro.rf.gd/arduino_nano_pinout.pdfIn PDF document text
    • http://fomuzuzidoduvi.epizy.com/how_to_download_sims_3_for_free_on_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff4977e8-62c0-4cb8-8996-1b9993a94569/what_are_the_elements_of_music_with_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a83e487-3de4-49a1-92f6-a2922c525b8a/19518833071.pdfIn PDF document text
    • http://zogupavufun.epizy.com/20645196915.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e90a026b-dfc3-4faf-9cbb-97a4bbf7fda1/wogitoxinebewa.pdfIn PDF document text
    • http://jebufipip.epizy.com/hydrogen_peroxide_msds_sheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85afe3a3-0e71-4960-83e3-ef20bca73405/how_do_i_turn_on_telstra_call_forwarding.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_off0000fee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE2 5000 bytes
SHA-256: bf1c79199f36a615a1df51a2f78f45b360f422046cf0d922fb660a919299bf8b
font_01_sfnt_off00010fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE8 10788 bytes
SHA-256: b173a5fbec839c1564a7d420571f3ae027dc96135098de3d3e1bb8adb971d0d2

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