Malicious PDF — malware analysis report

Static analysis result for SHA-256 46d4f9eb972264d3…

MALICIOUS

PDF

77.6 KB Created: 2021-03-14 15:43:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: e9a4e647d17efdded520a8624e3245f2 SHA-1: f71787fa625a263420d28345c6853940733cfb46 SHA-256: 46d4f9eb972264d35a1d457a09b0ec44d9d8b03398908046b62732094222a874
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs and heuristic firings indicating it is a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body, though partially corrupted, contains a lure related to driver's license renewal, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/strik?utm_term=cost+to+renew+ak+driver%2527s+license PDF link annotation
    • http://digitalmicroteter.xyz/what_kind_of_transmission_fluid_does_a_2008_honda_civic_usexnuw2.pdfIn PDF document text
    • http://itverys.space/attila_total_war_alans_guidepyygf.pdfIn PDF document text
    • http://mojofaza.mypressonline.com/oxford_english_english_arabic_dictionary.pdfIn PDF document text
    • http://lenulari.mypressonline.com/the_chicken_shack_menu_mexico_ny.pdfIn PDF document text
    • http://xufamorazogubov.sportsontheweb.net/50626781165.pdfIn PDF document text
    • http://serdyukov.pro/what_jobs_can_you_get_with_an_english_literature_and_creative_writing_degreezq5zb.pdfIn PDF document text
    • http://mini-camera-super.club/duwufuviljae0.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/e54343d4-6b82-4a12-a919-3982efe811bb/76330426069.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/majutavuvuguwa.pdfIn PDF document text
    • https://d78d2789-9aef-4bfd-88be-9093bec910ef.filesusr.com/ugd/87a178_831319bfe4e644d9bd4d2cf5d1e9088e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f1c9ac3-ac9b-4611-bad6-e441df404e24/zexiked.pdfIn PDF document text
    • https://bd7a0a6f-bbfd-49cc-ba41-c3f2778102d9.filesusr.com/ugd/9ea91e_f7494edda0a54bf7b3efc3668b277c68.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/zoom_video_call_free.pdfIn PDF document text
    • https://cd9ed9ec-87d1-42be-9198-0b2de6c1db4d.filesusr.com/ugd/158fb9_36fbf31a7bf242aea6f437eecf5c6176.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e72568a-eef3-442b-9be7-f84a3603f72f/duwufudoxazopal.pdfIn PDF document text
    • https://18e99e0c-7034-4a8c-9069-267580a295b8.filesusr.com/ugd/b337f5_6bbd10abcb434df39565c3822ed18983.pdf?index=trueIn PDF document text
    • https://e25b7b56-d8f7-44cb-9276-56428e53d1cc.filesusr.com/ugd/63f3e8_2efc97ec76554c58b464aa26e3f8fd80.pdf?index=trueIn PDF document text
    • https://09972071-4174-499b-90b1-de3619f59f53.filesusr.com/ugd/d1c05f_c1b5d6e42fcd479dacd651580ebb277b.pdf?index=trueIn PDF document text
    • http://kuwitabetegipo.myartsonline.com/how_to_use_proform_without_ifit.pdfIn PDF document text
    • https://9afb1793-bc57-4514-bb46-74e980466609.filesusr.com/ugd/11f207_123c6b8ef100474da4b9eed27bd4614a.pdf?index=trueIn PDF document text
    • https://587b455d-cc79-4428-8e80-a8b75ce23bca.filesusr.com/ugd/021ec8_2af2089bdfd44031a1539b31949af9f5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/sulivujunezexogigomive.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/60684976928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9de4b44-22c6-43d2-9686-b91b11374e8c/vetofomizefivafowupuki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/670602b9-035b-4e5f-8d5f-dbaf3b0b34dd/rifirojutamekajakilonepi.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_off0000f238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF238 5088 bytes
SHA-256: 62c4a2033854b91c382117e4db78e07f2a7d1dc3a0cb15b9804052fffb3938a7
font_01_sfnt_off000103b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B2 10948 bytes
SHA-256: 2d97a77b4b4f166d88af3e5124216d7e848666b650e8d4f751cd73d3c2d8cef9