Malicious PDF — malware analysis report

Static analysis result for SHA-256 09e36fb0ab232843…

MALICIOUS

PDF

67.3 KB Created: 2021-03-31 02:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4b06a9ea32a192304b0cd8fd9f754997 SHA-1: 9a1cc93a80c5a08716e6d0ac6810cae41db37e98 SHA-256: 09e36fb0ab232843b52d170d72299f0d8027305e0008cf941ecd7e5d88f51ea5
126 Risk Score

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 0.9992

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://leonvi.ru/strik?utm_term=do+dealerships+do+repairs PDF link annotation
    • https://cdn.sqhk.co/vutexexukus/ihhfhfb/smyrna_first_umc_smyrna_ga.pdfIn PDF document text
    • http://businesshelpservice.com/lenovo_g50-80_specificationsaosvj.pdfIn PDF document text
    • http://demask.space/ottlite_led_desk_lamp_with_wireless_charging_costcoztrer.pdfIn PDF document text
    • http://fruktovik.com/snakes_on_a_plane_quotes_mother62ohu.pdfIn PDF document text
    • https://cdn.sqhk.co/zanemulazif/h0p0Sgi/byju_s_learning_app_free_download_for_windows.pdfIn PDF document text
    • http://ubsvp.com/jelujujo8syam.pdfIn PDF document text
    • http://jumbochecker.com/cost_to_repair_power_recliner1c4rl.pdfIn PDF document text
    • https://cdn.sqhk.co/buzulexoxuve/cg3ihih/mobily_apple_watch.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/hqgeFgD/potusokupisugujupujafi.pdfIn PDF document text
    • http://poopo.ru/87170991523a33ph.pdfIn PDF document text
    • https://cdn.sqhk.co/watexoba/hjhwjsc/street_archery_run_ii_master_horse_riding.pdfIn PDF document text
    • http://avtoshtorki.shop/cyberghost_vpn_premium_mod_apkdxi3e.pdfIn PDF document text
    • http://heretythere.site/89803363383wjwpo.pdfIn PDF document text
    • https://cdn.sqhk.co/jezuleku/jgdAFEd/zitex.pdfIn PDF document text
    • http://fovejane.22web.org/benowibugofixe.pdfIn PDF document text
    • http://groby-ritual.online/69623109230b0vnj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b3dfd9c9-1030-471f-a26d-814ea73dbccc.filesusr.com/ugd/d97afa_4e957cc3018642eca2cb4565d293344e.pdf?index=trueIn PDF document text
    • https://08b4a39d-fa16-4eaa-91be-ae90003cacb9.filesusr.com/ugd/237bf7_82cc65b8bb8943f9b87ae13d3fd035e2.pdf?index=trueIn PDF document text
    • http://vonikolodu.rf.gd/microwave_transistor_amplifiers_analysis_and_design_solution_manual.pdfIn PDF document text
    • https://2c91b947-1dd8-401e-ae91-d595f2f75867.filesusr.com/ugd/0af078_8ad948df7c314e3788957c2921be4236.pdf?index=trueIn PDF document text
    • http://luxixeg.epizy.com/mudujevu.pdfIn PDF document text
    • http://kuzojif.rf.gd/gerusejumag.pdfIn PDF document text
    • http://xibubew.epizy.com/add_hyperlink_to_image_in_google_sheets.pdfIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_67a3bfe0e4a34d71a8978c4b1226a4fb.pdf?index=trueIn PDF document text
    • https://fea67d75-dd3b-4bdd-af05-748e92ec8a52.filesusr.com/ugd/05900a_dba71da98bf74f899c0e9547ab8cc4e0.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_off0000c9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9FB 5044 bytes
SHA-256: 061144ed55ecc6d4928ff2d771c0fa7758b3f72724797f6562a15f8e3dd62258
font_01_sfnt_off0000db1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1F 10208 bytes
SHA-256: 41a10844a4b5ac79c160e6104bbdad77d0f6dd88877cfb21157a7ed0baf1ff3d

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