Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2bc7e40c8a8a82…

MALICIOUS

PDF

83.4 KB Created: 2021-05-01 22:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7b1210c6a131d2929a51366dbb5c210 SHA-1: 9c7ea5dc06a30dd2fac6ee9098cf1bdb298939eb SHA-256: eb2bc7e40c8a8a82dc28be543c15a20f87386b1893ca4a7e875db8e6f0d67a68
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that leads to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. The PDF's content and structure suggest it's designed to trick users into clicking the malicious link, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/strik?utm_term=quant+job+interview+questions+and+answers+mark+joshi+pdf
    • https://cdn-cms.f-static.net/uploads/4401994/normal_603610e536390.pdf
    • https://cdn-cms.f-static.net/uploads/4377706/normal_606ea1ecd52a3.pdf
    • https://static.s123-cdn-static.com/uploads/4475719/normal_6007b15ab69a2.pdf
    • https://cdn-cms.f-static.net/uploads/4414175/normal_602a3d0e7ac8b.pdf
    • https://cdn-cms.f-static.net/uploads/4369163/normal_602c47d011f5e.pdf
    • https://cdn-cms.f-static.net/uploads/4464722/normal_60241c6e2adb0.pdf
    • http://guzolemidova.iblogger.org/sql_recipes.pdf
    • https://static.s123-cdn-static.com/uploads/4374364/normal_5fe3a5849239e.pdf
    • https://cdn-cms.f-static.net/uploads/4446942/normal_600e6d6562a72.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2b7e0c75-dee7-44aa-8e0d-5ef73e519a78/1995_jeep_wrangler_factory_service_manual.pdf
    • http://puzuzebud.epizy.com/32304485871.pdf
    • https://uploads.strikinglycdn.com/files/470fc95f-6163-441e-89b3-ead110a68f3c/how_to_clean_ninja_foodi_grill_splatter_shield.pdf
    • https://uploads.strikinglycdn.com/files/dd5e2374-6264-4f83-a3bb-5bd3374ce599/the_real_book_bb_sixth_edition.pdf
    • https://uploads.strikinglycdn.com/files/71a7fff6-df1e-4585-bfc0-d3e2e620250a/relationship_between_electricity_and_magnetism_is_called.pdf
    • https://uploads.strikinglycdn.com/files/0b6f1d33-888d-42b0-888a-ee963106602d/kenmore_elite_dual_fuel_range_model_790_manual.pdf
    • https://uploads.strikinglycdn.com/files/ceab7a8d-0b75-48a6-8737-307d51793c53/jemuzifupegozavawe.pdf
    • https://uploads.strikinglycdn.com/files/a700383b-79ed-4f4d-9ca7-1f21cb8b0523/james_and_the_giant_peach_book_plot_summary.pdf
    • http://webexewidulub.epizy.com/xobelor.pdf
    • https://uploads.strikinglycdn.com/files/714d096b-cd70-48ca-8221-0a9d6d8b3e47/the_merry_adventures_of_robin_hood_by_howard_pyle_audiobook.pdf
    • https://uploads.strikinglycdn.com/files/8e6f18c0-e4d7-4efa-a41c-e412403924b9/31128782356.pdf
    • https://uploads.strikinglycdn.com/files/6f0ed1a5-dba7-4778-bbcb-c2436b6221d3/warenedoluvewogutemu.pdf
    • https://uploads.strikinglycdn.com/files/5ad0e7cb-a225-4354-a788-b30eca8ce3c6/canon_xh_a1_video_camera.pdf
    • https://uploads.strikinglycdn.com/files/e0c884ed-60a9-49e3-b9d7-9e2633be61ec/25079219523.pdf
    • http://bizower.rf.gd/bratstvo_crnog_bodea_knjige.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105bc.bin
23eea92ebbe3def3b6e2ee739c93679ed02e8387e939f0fcd112cae3c21c7981
pdf-font-stream PDF embedded font (sfnt) at offset 0x105BC 5868 bytes
font_01_sfnt_off00011998.bin
640000a710843ff57cbd1d373347bb30a6bee9dd1575c47c504cb372ea92aaa3
pdf-font-stream PDF embedded font (sfnt) at offset 0x11998 11064 bytes