Malicious PDF — malware analysis report

Static analysis result for SHA-256 bae59690a086160b…

MALICIOUS

PDF

87.5 KB Created: 2021-03-06 04:07:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a06d1f2270c40750204b1ab78865c37f SHA-1: fa134356e67ead57e3a645a8bce5e5660a40ec8d SHA-256: bae59690a086160b967f18a476175e9e9a7e8eae50b3a7cdcb55b6c090056b73
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://golowaki.ru/award?keyword=are+old+singer+sewing+machines+valuable PDF link annotation
    • https://cdn.sqhk.co/retepisej/hdPjahg/ca_dmv_appointments_coronavirus.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/caz3rjf/high_school_escape_2_level_4_walkthrough.pdfIn PDF document text
    • http://kixamugefuwa.22web.org/bittorrent_turbo_accelerator_free.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/Abg9jgn/used_mini_golf_drivers_for_sale.pdfIn PDF document text
    • http://lagujegivupani.22web.org/wemegonimomagiji.pdfIn PDF document text
    • https://cdn.sqhk.co/dafisuwikib/igByhdE/8735766151.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/caligula_s_horse_discographycp5mb.pdfIn PDF document text
    • http://kungfumalibu.com/kaziburidesotogisasurtplk.pdfIn PDF document text
    • https://cdn.sqhk.co/sivunukiwe/gectpgl/run_off_rate_definition.pdfIn PDF document text
    • http://reduslimitaly-official.website/video_editor_online_free_download5bimc.pdfIn PDF document text
    • https://cdn.sqhk.co/jivaduzar/0rgfkid/crush_them_all_discord.pdfIn PDF document text
    • http://itravelimpressions.com/how_to_clean_filter_on_mitsubishi_air_conditioneritu2k.pdfIn PDF document text
    • http://lotto-investclub.com/breville_juice_fountain_plus12uq3.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/62536920-2247-4972-a31d-958dc008e036/harry_potter_y_el_prisionero_de_azkaban_20_aniversario.pdfIn PDF document text
    • http://wofenexofube.rf.gd/black_and_decker_20v_lithium_battery_charger_home_depot.pdfIn PDF document text
    • http://lugubukegi.epizy.com/76663276744.pdfIn PDF document text
    • http://vuzudaru.epizy.com/47497384042.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c37bbf3-2562-4f3d-98b5-f1a2f1e71cc4/decal_application_instructions_svg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68d77ac1-b76f-4832-af21-ed28621ccc4e/why_is_my_nighthawk_router_not_connecting_to_the_internet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9780a5f2-f0e9-4bc0-83c8-a9341ede2e4d/how_much_does_hear.com_hearing_aids_cost.pdfIn PDF document text
    • http://xemuxoxowe.epizy.com/wu_tang_the_saga_continues_hulu_cast.pdfIn PDF document text
    • http://surobufalinaxis.epizy.com/xozuwiregab.pdfIn PDF document text
    • http://lisunamubeso.epizy.com/10519035439.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_off000119f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119F2 5636 bytes
SHA-256: 1fc53275ac8142a59fbc11cfe0be3f847ebe69960c95f4bb9f1af07f027030dc
font_01_sfnt_off00012d00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D00 10476 bytes
SHA-256: 13b788c6b40eb9f1dce054069833a0949e075b4dbf82effe2ad2567bb7a2166a

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