Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc4b0ec2c4379c3…

MALICIOUS

PDF

83.4 KB Created: 2021-03-26 07:14:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 431d4ad9c2ef70470ad168ac8d52cc98 SHA-1: e6fd084621a39debe641eb3ddb3e918b438d5cb6 SHA-256: 0bc4b0ec2c4379c30f956ca9d09f5e24232b45c32ac5883fcfe88562a04c3e1f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary focus on 'https://kuzutuzo.ru/wix?keyword=astros+seating+chart+view'. This URL, combined with the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM', indicates a likely phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support the malicious nature of this file, suggesting it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=astros+seating+chart+view PDF link annotation
    • https://cdn.sqhk.co/rurufimibiwe/2ibjShg/tamegoripi.pdfIn PDF document text
    • http://zigitodaxepugi.22web.org/internet_manager_full_crack_terbaru.pdfIn PDF document text
    • https://cdn.sqhk.co/folukize/fj0x6oy/jojiwusodapizuminitunel.pdfIn PDF document text
    • http://kexedeziferu.sportsontheweb.net/master_plan_of_evangelism_study_guide.pdfIn PDF document text
    • http://rerixen.scienceontheweb.net/gugabumere.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/0f0fb56a-480e-4f8f-a1f2-99636af75604/fijesi.pdfIn PDF document text
    • https://6478d21b-237c-41b5-add8-96d7b9819624.filesusr.com/ugd/c7ef1a_ebbbc87edc544f85b40601ac79fc0b6e.pdf?index=trueIn PDF document text
    • http://wavexijazibivat.myartsonline.com/64704970299.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/william_shakespeare_sonnet_18_translation.pdfIn PDF document text
    • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_25ab643ce1664e15947f993645f10d07.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b190365-c1e1-4fd2-be8b-3c336afe105b/bryant_furnace_heat_exchanger_warranty.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffb6ed54-333c-40d4-8ddf-0bf1d745f7d7/24645745336.pdfIn PDF document text
    • http://woxesizefibugel.atwebpages.com/pebuliwijobanalanawabolav.pdfIn PDF document text
    • http://wexejof.epizy.com/frozen_movie_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/asphalt_9_ios_and_android_club.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/78157484354.pdfIn PDF document text
    • https://200c4c3d-185b-4246-b99f-f40cd7065c99.filesusr.com/ugd/3ed902_0d24b021ef5646089e4939e475ab8b77.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f16b1f0a-7fc2-4afd-bf35-bc6efbbf143d/behringer_xenyx_qx1202usb_usb_audio_mixer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/ryobi_table_saw_stand.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF188 5172 bytes
SHA-256: d15d0a3ff5b583ee903ba3eb5a9b915ac19c7f43797c240827f99b6ced17664e
font_01_sfnt_off00010335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10335 11132 bytes
SHA-256: 20e68cf480e8de2b26048aa1ea01b2bee13c492a8627e5c038f44fa179bdd7f5
font_02_sfnt_off00012925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12925 16200 bytes
SHA-256: abd4c962e03017e928cbd68b9323645de88a3c31ce95c5f70960fd827010b359

Open this report in the interactive analyzer, or submit your own file for analysis.