Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea88282a6d471898…

MALICIOUS

PDF

78.1 KB Created: 2021-03-12 08:41:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad78e7372d62e0daedd0efbebf5fe341 SHA-1: ae8a80031f2c26f9f5cf6c8ed9bc355dda42e5f1 SHA-256: ea88282a6d471898ba5bc44f52d7912350cfca785e6cc7674d9081f9e844a551
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing and potential trojan threat. It contains a large number of external links, many of which are likely part of a link farm designed to direct users to malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, contains a lure related to downloading a movie, and the presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports a social engineering attack. The primary attack vector appears to be social engineering to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/wix?keyword=download+the+conjuring+2+full+movie+in+hindi
    • https://monirazosakazux.weebly.com/uploads/1/3/5/3/135316997/2c42e92b6a11.pdf
    • https://sutapupimode.weebly.com/uploads/1/3/4/6/134615637/supufeweni.pdf
    • http://profmaster74.ru/a_second_course_in_statistics_regression_analysis_7th_edition_freemxaxc.pdf
    • http://nanonewe.scienceontheweb.net/milulapurivudorikun.pdf
    • http://compte-cmbretagne.best/sda_hymnal_free_download_for_pcbuus1.pdf
    • http://fullstacket.online/basketball_stars_unblockedbj1u8.pdf
    • http://nazorizuz.medianewsonline.com/morixi.pdf
    • http://a-trvl.ru/software_folder_colorizerv5a6s.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://razogop.epizy.com/how_to_calculate_preferred_dividends_from_balance_sheet.pdf
    • http://kozogasivufi.myartsonline.com/64914163475.pdf
    • https://uploads.strikinglycdn.com/files/f29441ad-0d88-474e-8645-b33bf15e74d2/is_a_ps_vita_worth_it_in_2020.pdf
    • https://uploads.strikinglycdn.com/files/8106a8ec-b6eb-4d02-9e50-e0bbf2e8cc14/lugomozutemorivunis.pdf
    • http://jepafuzezax.epizy.com/39660826991.pdf
    • https://uploads.strikinglycdn.com/files/03394858-fc01-4f43-839c-f1f0614fa988/culturally_responsive_teaching_strategies_for_african_american_students.pdf
    • http://kobaguwo.epizy.com/parimewedotegurojakulava.pdf
    • https://uploads.strikinglycdn.com/files/713d73c5-c387-4a95-8b22-4e54204137fb/zoom_g1xon_price_philippines.pdf
    • http://zowedejiwut.epizy.com/89536720514.pdf
    • https://uploads.strikinglycdn.com/files/7fb8a8ad-a2cf-47a5-84f0-27186f366c0b/52060005363.pdf
    • https://uploads.strikinglycdn.com/files/46970045-efb3-4bb8-ae0d-84741a292f44/mamodatumalimerapez.pdf
    • http://tavuxikib.epizy.com/kejepipadolofoziso.pdf
    • https://uploads.strikinglycdn.com/files/fd67eb23-a1b1-4dbd-ae24-af092f470c0e/geralds_game_full_movie_free_download_in_hindi.pdf
    • https://uploads.strikinglycdn.com/files/041e34a1-a8b9-42e5-8a9d-f6bd63deda87/iso_9001_lead_auditor_course_online.pdf
    • https://uploads.strikinglycdn.com/files/5b6376c6-592a-4610-8e7b-17f42b925e87/mi_planta_de_naranja_lima_resumen_del_capitulo_4.pdf
    • https://uploads.strikinglycdn.com/files/e81268cd-9f3a-4b18-a16f-34ebeee42ffe/zidaruxerakadelebefi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f421.bin
d6c0f7078f54c62baff30814805f53927abaa4dcd3b6f6d69751b5ef16f86f19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF421 5616 bytes
font_01_sfnt_off0001073a.bin
41450f14456d41a5e361300209956025d523c3e1ecbfe68d1433513e28e6a98a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1073A 10184 bytes

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