Malicious PDF — malware analysis report

Static analysis result for SHA-256 492ee1fe7a78e790…

MALICIOUS

PDF

76.9 KB Created: 2021-03-08 01:04:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ca83ef9322222ff2393c64fb423964fc SHA-1: 14d4945cc41cddc1a37da8adc1c2483c8fa5b218 SHA-256: 492ee1fe7a78e790a9d42c79f3594b968f1cd9a622bdfb4a0662df7d567d28a6
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to 'discount tickets' on a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious 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://kuzutuzo.ru/wix?keyword=canfield+scaregrounds+discount+tickets PDF link annotation
    • http://gonzo-3d.com/is_behind_closed_doors_on_netflix49bn8.pdfIn PDF document text
    • http://firstdoctor.xyz/what_makes_the_pyramids_of_giza_unique4lhqc.pdfIn PDF document text
    • http://vojamugoju.22web.org/64849932341.pdfIn PDF document text
    • http://italonewsero.site/best_way_to_bleach_hair_with_splatfa8iu.pdfIn PDF document text
    • http://faromobipon.22web.org/2075355507.pdfIn PDF document text
    • http://wumagakex.iblogger.org/95987080093.pdfIn PDF document text
    • http://wutugupim.iblogger.org/10569563721.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kiluwemu.rf.gd/wubogabakurugovu.pdfIn PDF document text
    • http://rubujizuz.epizy.com/how_to_program_directv_genie_remote_control.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/rye_bread_nutrition_information.pdfIn PDF document text
    • http://lorenivi.rf.gd/vazasizobosotawavodigi.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/52380524658.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c21023e-55ed-4363-8491-b87356b0f445/red_star_over_china_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/google_forms_export_to_spreadsheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c355a0d-c7f6-4828-98b5-ddc534fa660a/fender_hot_rod_deluxe_limited_edition_texas_red.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4888882-4b92-4ab4-b0b6-821af58d87ac/zisuzeloxobepevovefadexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ffe9762-16e2-4f59-8211-112ad812dda5/how_to_write_employee_comments_on_performance_review_examples.pdfIn PDF document text
    • http://jedikofip.rf.gd/wododofugebakutar.pdfIn PDF document text
    • http://jugututinotu.rf.gd/fastanime_watch_anime_online_tv_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/82611099147.pdfIn PDF document text
    • http://xonisuxumezitez.epizy.com/diablo_trinity_t1000.pdfIn PDF document text
    • http://gepuxaxevo.rf.gd/brightest_led_flashlight_for_android_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/477faa54-5ce9-48b9-80a8-2fe6c89b0811/how_much_is_a_telescopic_forklift_licence.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_off0000efd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD7 5160 bytes
SHA-256: fec4adbeab3d5495b3d06947684ac5b6f776e56776ec3370f1679add549a4da0
font_01_sfnt_off00010173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10173 10756 bytes
SHA-256: aff9418d501d04da06784d82b98a1da95dcdf687881502ac2f42fdc5676e2bc4

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